Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/arc-5.21q/arc.c
Examining data/arc-5.21q/arc.h
Examining data/arc-5.21q/arccode.c
Examining data/arc-5.21q/arccvt.c
Examining data/arc-5.21q/arcdata.c
Examining data/arc-5.21q/arcdel.c
Examining data/arc-5.21q/arcdos.c
Examining data/arc-5.21q/arclst.c
Examining data/arc-5.21q/arcmatch.c
Examining data/arc-5.21q/arcpack.c
Examining data/arc-5.21q/arcrun.c
Examining data/arc-5.21q/arcs.h
Examining data/arc-5.21q/arcsq.c
Examining data/arc-5.21q/arcsvc.c
Examining data/arc-5.21q/arctst.c
Examining data/arc-5.21q/arcusq.c
Examining data/arc-5.21q/marc.c
Examining data/arc-5.21q/proto.h
Examining data/arc-5.21q/tmclock.c
Examining data/arc-5.21q/arcadd.c
Examining data/arc-5.21q/arcext.c
Examining data/arc-5.21q/arcmisc.c
Examining data/arc-5.21q/arcio.c
Examining data/arc-5.21q/arclzw.c
Examining data/arc-5.21q/arcunp.c
FINAL RESULTS:
data/arc-5.21q/arcrun.c:135:2: [5] (race) chmod:
This accepts filename arguments; if an attacker can move those files, a
race condition results. (CWE-362). Use fchmod( ) instead.
chmod(buf, 0700); /* make it executable */
data/arc-5.21q/arc.c:258:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(arcname,arg[2]);
data/arc-5.21q/arc.c:265:2: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(newname, "%s.arc", arctemp);
data/arc-5.21q/arc.c:440:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(lst[lnum], buf); /* save the name */
data/arc-5.21q/arcadd.c:81:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(buf, arg[n]); /* get ready to fix path */
data/arc-5.21q/arcadd.c:102:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(i, d); /* put name in path */
data/arc-5.21q/arcadd.c:104:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(path[nfiles - 1], buf);
data/arc-5.21q/arcadd.c:298:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(nhdr.name, name);/* save name */
data/arc-5.21q/arccvt.c:43:3: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(tempname, "%s.CVT", arctemp);
data/arc-5.21q/arcdos.c:126:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(name, f);
data/arc-5.21q/arcext.c:124:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(fix, path); /* note path name template */
data/arc-5.21q/arcext.c:139:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(i + 1, hdr->name); /* replace template with name */
data/arc-5.21q/arcext.c:179:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(c_name, fix);
data/arc-5.21q/arcmatch.c:45:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(oldtemp, t);
data/arc-5.21q/arcmisc.c:174:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(rawbuf, rawfn);
data/arc-5.21q/arcmisc.c:179:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(rawfn, i);
data/arc-5.21q/arcmisc.c:184:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(rawfn, i);
data/arc-5.21q/arcmisc.c:189:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(rawfn, i);
data/arc-5.21q/arcmisc.c:200:2: [4] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused).
strcat(result, rawbuf);
data/arc-5.21q/arcmisc.c:201:2: [4] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused).
strcat(result, er[0] ? er : et);
data/arc-5.21q/arcmisc.c:202:2: [4] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused).
strcat(result, er[9] ? er + 9 : et + 9);
data/arc-5.21q/arcmisc.c:234:2: [4] (format) vfprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
vfprintf(stderr, s, args);
data/arc-5.21q/arcmisc.c:293:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(name, dbuf.d_fname);
data/arc-5.21q/arcmisc.c:303:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(name, dbuf.d_fname);
data/arc-5.21q/arcmisc.c:325:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(namecopy,filename);
data/arc-5.21q/arcmisc.c:338:4: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy((NameList)[ii], namelist[ii]->d_name);
data/arc-5.21q/arcmisc.c:409:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(pattern.name, filepattern);
data/arc-5.21q/arcmisc.c:441:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(i, k);
data/arc-5.21q/arcmisc.c:455:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(pattern, filepattern);
data/arc-5.21q/arcmisc.c:481:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(j, k);
data/arc-5.21q/arcmisc.c:496:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(name, path);
data/arc-5.21q/arcpack.c:173:4: [4] (format) printf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
printf(dosquash ? "squashed, " : "crunched, ");
data/arc-5.21q/arcrun.c:81:2: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(buf, "%s.RUN", arctemp);
data/arc-5.21q/arcrun.c:82:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(sys, buf);
data/arc-5.21q/arcrun.c:84:2: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(nbuf, arctemp);
data/arc-5.21q/arcrun.c:91:3: [4] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused).
strcat(sys, buf);
data/arc-5.21q/arcrun.c:96:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(sys, buf);
data/arc-5.21q/arcrun.c:142:3: [4] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused).
strcat(sys, arg[n]);
data/arc-5.21q/arcrun.c:144:6: [4] (shell) system:
This causes a new program to execute and is difficult to use safely
(CWE-78). try using a library call that implements the same functionality
if available.
if (system(buf)) /* try to invoke it */
data/arc-5.21q/arcsvc.c:85:34: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
/* new copy... */ strcpy(what, newname);
data/arc-5.21q/arcsvc.c:88:34: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(who,"like %s",arcname);
data/arc-5.21q/marc.c:137:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(arcname,arg[1]);
data/arc-5.21q/marc.c:141:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(srcname,arg[2]);
data/arc-5.21q/marc.c:149:2: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(newname,"%s.arc",arctemp);
data/arc-5.21q/marc.c:329:3: [4] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused).
strcpy(lst[lnum],buf); /* save the name */
data/arc-5.21q/arc.h:24:17: [3] (buffer) getenv:
Environment variables are untrustable input if they can be set by an
attacker. They can have any content and length, and the same variable can
be set more than once (CWE-807, CWE-20). Check environment variables
carefully before using them.
#define envfind getenv
data/arc-5.21q/arc.c:125:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char gotinf[4];
data/arc-5.21q/arc.c:208:7: [2] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused). Risk is low because the source is a constant string.
else strcpy(arctemp, "/tmp/");
data/arc-5.21q/arc.c:212:3: [2] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant string.
strcat(arctemp, "AXXXXXX");
data/arc-5.21q/arc.c:213:12: [2] (tmpfile) mkstemp:
Potential for temporary file vulnerability in some circumstances. Some
older Unix-like systems create temp files with permission to write by all
by default, so be sure to set the umask to override this. Also, some older
Unix systems might fail to use O_EXCL when opening the file, so make sure
that O_EXCL is used by the library (CWE-377).
int fd = mkstemp(arctemp);
data/arc-5.21q/arc.c:223:2: [2] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant string.
strcat(arctemp, "$ARCTEMP");
data/arc-5.21q/arc.c:419:20: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *lf, *fopen(); /* list file, opener */
data/arc-5.21q/arc.c:420:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[100]; /* input buffer */
data/arc-5.21q/arc.c:426:14: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if (!(lf = fopen(buf, "r")))
data/arc-5.21q/arc.h:101:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
extern char sepchr[2]; /* Shared file separator, default = ':' */
data/arc-5.21q/arc.h:102:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
extern char tmpchr[2]; /* Temporary file prefix, default = '-' */
data/arc-5.21q/arc.h:122:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
extern char arcname[STRLEN];/* storage for archive name */
data/arc-5.21q/arc.h:123:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
extern char bakname[STRLEN];/* storage for backup copy name */
data/arc-5.21q/arc.h:124:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
extern char newname[STRLEN];/* storage for new archive name */
data/arc-5.21q/arcadd.c:51:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[STRLEN]; /* pathname buffer */
data/arc-5.21q/arcadd.c:246:22: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *f, *fopen(); /* file to add, opener */
data/arc-5.21q/arcadd.c:251:12: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if (!(f = fopen(path, OPEN_R)))
data/arc-5.21q/arcadd.c:254:7: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
f = fopen(path, OPEN_R);
data/arc-5.21q/arcadd.c:256:7: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
f = fopen(path, "r");
data/arc-5.21q/arcadd.c:269:4: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[STRLEN];
data/arc-5.21q/arccvt.c:28:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char tempname[STRLEN]; /* temp file name */
data/arc-5.21q/arccvt.c:40:18: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *fopen();/* file opener */
data/arc-5.21q/arccvt.c:98:24: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *tmp, *fopen(); /* temporary file */
data/arc-5.21q/arccvt.c:100:14: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if (!(tmp = fopen(tempname, "w+b")))
data/arc-5.21q/arcdata.c:30:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char sepchr[2] = ":";/* Shared file separator */
data/arc-5.21q/arcdata.c:31:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char tmpchr[2] = "-";/* Temporary file prefix */
data/arc-5.21q/arcdata.c:51:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char arcname[STRLEN]; /* storage for archive name */
data/arc-5.21q/arcdata.c:52:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char bakname[STRLEN]; /* storage for backup copy name */
data/arc-5.21q/arcdata.c:53:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char newname[STRLEN]; /* storage for new archive name */
data/arc-5.21q/arcdos.c:102:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[24];
data/arc-5.21q/arcdos.c:153:7: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
ff = fopen(f, "w+"); /* How else can I get a handle? */
data/arc-5.21q/arcext.c:114:22: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *f, *fopen(); /* extracted file, opener */
data/arc-5.21q/arcext.c:115:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[STRLEN]; /* input buffer */
data/arc-5.21q/arcext.c:116:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char fix[STRLEN]; /* fixed name buffer */
data/arc-5.21q/arcext.c:145:12: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if ((f = fopen(fix, "r"))) { /* see if it exists */
data/arc-5.21q/arcext.c:168:12: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if (!(f = fopen(fix, OPEN_W)))
data/arc-5.21q/arcext.c:173:3: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char c_name[256];
data/arc-5.21q/arcext.c:177:3: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char c_vol[6];
data/arc-5.21q/arcext.c:188:7: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
f = fopen(fix, OPEN_W);
data/arc-5.21q/arcext.c:190:7: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
f = fopen(fix, "w");
data/arc-5.21q/arcio.c:33:11: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
unsigned char dummy[28];
data/arc-5.21q/arcio.c:36:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[FNLEN]; /* filename buffer */
data/arc-5.21q/arclzw.c:92:8: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char buf[SQBITS]; /* input/output buffer */
data/arc-5.21q/arcmatch.c:37:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char patccid[4];
data/arc-5.21q/arcmatch.c:38:9: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char patchar[2] = "?";
data/arc-5.21q/arcmatch.c:39:9: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char oldtemp[16] = 0;
data/arc-5.21q/arcmisc.c:104:11: [2] (misc) open:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
int fd = open(path, O_CREAT | O_WRONLY | O_EXCL, S_IRUSR | S_IWUSR);
data/arc-5.21q/arcmisc.c:114:18: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *fopen(), *old, *new;
data/arc-5.21q/arcmisc.c:128:9: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
old = fopen(oldnam, OPEN_R);
data/arc-5.21q/arcmisc.c:131:9: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
new = fopen(newnam, OPEN_W);
data/arc-5.21q/arcmisc.c:171:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char et[17], er[17], rawbuf[STRLEN], *i;
data/arc-5.21q/arcmisc.c:315:9: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char namecopy[STRLEN], *dirname;
data/arc-5.21q/arcmisc.c:384:3: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[257];
data/arc-5.21q/arcmisc.c:390:3: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[257];
data/arc-5.21q/arcmisc.c:446:9: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char gfname[24];
data/arc-5.21q/arcmisc.c:447:9: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
static char pattern[20];
data/arc-5.21q/arcmisc.c:494:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[258];
data/arc-5.21q/arcrun.c:39:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[STRLEN]; /* filename buffer */
data/arc-5.21q/arcrun.c:40:18: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *fopen();/* file opener */
data/arc-5.21q/arcrun.c:41:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char *dummy[2];
data/arc-5.21q/arcrun.c:69:24: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *tmp, *fopen(); /* temporary file */
data/arc-5.21q/arcrun.c:70:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[STRLEN], *makefnam(); /* temp file name, fixer */
data/arc-5.21q/arcrun.c:72:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char nbuf[64], *i, *rindex();
data/arc-5.21q/arcrun.c:76:2: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char sys[STRLEN]; /* invocation command buffer */
data/arc-5.21q/arcrun.c:90:3: [2] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused). Risk is low because the source is a constant string.
strcpy(sys, "BASICA ");
data/arc-5.21q/arcrun.c:124:14: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if ((tmp = fopen(buf, "r")))
data/arc-5.21q/arcs.h:37:5: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char name[FNLEN]; /* file name */
data/arc-5.21q/arcsvc.c:35:18: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *fopen();/* file opener */
data/arc-5.21q/arcsvc.c:37:14: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if (!(arc = fopen(arcname, OPEN_R))) {
data/arc-5.21q/arcsvc.c:82:34: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char what[FNLEN+2];
data/arc-5.21q/arcsvc.c:83:34: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
/* copy permissions */ char who[FNLEN+6];
data/arc-5.21q/marc.c:44:1: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char srcname[STRLEN]; /* source archive name */
data/arc-5.21q/marc.c:102:7: [2] (buffer) strcpy:
Does not check for buffer overflows when copying to destination [MS-banned]
(CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
easily misused). Risk is low because the source is a constant string.
else strcpy(arctemp, "/tmp/");
data/arc-5.21q/marc.c:106:3: [2] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant string.
strcat(arctemp, "AXXXXXX");
data/arc-5.21q/marc.c:107:12: [2] (tmpfile) mkstemp:
Potential for temporary file vulnerability in some circumstances. Some
older Unix-like systems create temp files with permission to write by all
by default, so be sure to set the umask to override this. Also, some older
Unix systems might fail to use O_EXCL when opening the file, so make sure
that O_EXCL is used by the library (CWE-377).
int fd = mkstemp(arctemp);
data/arc-5.21q/marc.c:117:2: [2] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant string.
strcat(arctemp, "$ARCTEMP");
data/arc-5.21q/marc.c:151:11: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
arc = fopen(arcname,OPEN_R); /* open the archives */
data/arc-5.21q/marc.c:152:14: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if(!(src=fopen(srcname,OPEN_R)))
data/arc-5.21q/marc.c:306:16: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
FILE *lf, *fopen(); /* list file, opener */
data/arc-5.21q/marc.c:307:5: [2] (buffer) char:
Statically-sized arrays can be improperly restricted, leading to potential
overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
functions that limit length, or ensure that the size is larger than the
maximum possible length.
char buf[100]; /* input buffer */
data/arc-5.21q/marc.c:315:11: [2] (misc) fopen:
Check when opening files - can an attacker redirect it (via symlinks),
force the opening of special file type (e.g., device files), move things
around to create a race condition, control its ancestors, or change its
contents? (CWE-362).
if(!(lf=fopen(buf,"r")))
data/arc-5.21q/arc.c:201:3: [1] (buffer) strncpy:
Easily used incorrectly; doesn't always \0-terminate or check for invalid
pointers [MS-banned] (CWE-120).
strncpy(arctemp, arctemp2, STRLEN - 16);
data/arc-5.21q/arc.c:203:7: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
n = strlen(arctemp);
data/arc-5.21q/arc.c:246:8: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
if (strlen(arg[n]) > (STRLEN - 16))
data/arc-5.21q/arc.c:305:19: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
etoa(password, strlen(password));
data/arc-5.21q/arc.c:435:9: [1] (buffer) fscanf:
It's unclear if the %s limit in the format string is small enough
(CWE-120). Check that the limit is sufficiently small, or use a different
input function.
while (fscanf(lf, "%99s", buf) > 0) { /* read in the list */
data/arc-5.21q/arc.c:439:22: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
lst[lnum] = malloc(strlen(buf) + 1);
data/arc-5.21q/arcadd.c:103:30: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
path[nfiles - 1] = malloc(strlen(buf) + 1);
data/arc-5.21q/arcadd.c:267:6: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
if (strlen(name) >= FNLEN) {
data/arc-5.21q/arcdos.c:127:2: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(name, " ");
data/arc-5.21q/arcext.c:180:3: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(c_name, " ");
data/arc-5.21q/arcio.c:43:11: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
hdrver = fgetc(f);
data/arc-5.21q/arcio.c:55:8: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
if (fgetc(f) == ARCMARK) {
data/arc-5.21q/arcio.c:60:29: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
dummy = ungetc(hdrver = fgetc(f), f);
data/arc-5.21q/arcio.c:80:11: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
hdrver = fgetc(f); /* get header version */
data/arc-5.21q/arcio.c:89:14: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
atoe(name, strlen(name));
data/arc-5.21q/arcio.c:110:25: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
(void) atoe(hdr->name, strlen(hdr->name));
data/arc-5.21q/arcio.c:170:18: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
etoa(hdr->name, strlen(hdr->name));
data/arc-5.21q/arcmatch.c:46:12: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
patlen = strlen(oldtemp);
data/arc-5.21q/arcmatch.c:53:11: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
namlen = strlen(n);
data/arc-5.21q/arcmisc.c:258:25: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
if (dirname == NULL || strlen(dirname) == 0)
data/arc-5.21q/arcmisc.c:337:28: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
(NameList)[ii] = malloc(strlen(namelist[ii]->d_name) + 1);
data/arc-5.21q/arcmisc.c:410:17: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
pattern.len = strlen(filepattern);
data/arc-5.21q/arcmisc.c:439:7: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
j = strlen(k);
data/arc-5.21q/arcmisc.c:456:3: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(pattern, " ");
data/arc-5.21q/arcmisc.c:479:7: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
i = strlen(k);
data/arc-5.21q/arcmisc.c:497:2: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(name, " ");
data/arc-5.21q/arcpack.c:264:9: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
c = fgetc(f);
data/arc-5.21q/arcrun.c:141:3: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(sys, " ");
data/arc-5.21q/arcsvc.c:86:34: [1] (buffer) strcat:
Does not check for buffer overflows when concatenating to destination
[MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
snprintf (warning: strncat is easily misused). Risk is low because the
source is a constant character.
strcat(what," ");
data/arc-5.21q/arcsvc.c:89:41: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
wholen=strlen(who);
data/arc-5.21q/marc.c:95:3: [1] (buffer) strncpy:
Easily used incorrectly; doesn't always \0-terminate or check for invalid
pointers [MS-banned] (CWE-120).
strncpy(arctemp, arctemp2, STRLEN - 16);
data/arc-5.21q/marc.c:97:7: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
n = strlen(arctemp);
data/arc-5.21q/marc.c:129:8: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
if (strlen(arg[n]) > (STRLEN - 16))
data/arc-5.21q/marc.c:324:11: [1] (buffer) fscanf:
It's unclear if the %s limit in the format string is small enough
(CWE-120). Check that the limit is sufficiently small, or use a different
input function.
while(fscanf(lf,"%99s",buf)>0) /* read in the list */
data/arc-5.21q/marc.c:328:22: [1] (buffer) strlen:
Does not handle strings that are not \0-terminated; if given one it may
perform an over-read (it could cause a crash if unprotected) (CWE-126).
lst[lnum] = malloc(strlen(buf)+1);
ANALYSIS SUMMARY:
Hits = 161
Lines analyzed = 5744 in approximately 0.18 seconds (31393 lines/second)
Physical Source Lines of Code (SLOC) = 4133
Hits@level = [0] 141 [1] 35 [2] 80 [3] 1 [4] 44 [5] 1
Hits@level+ = [0+] 302 [1+] 161 [2+] 126 [3+] 46 [4+] 45 [5+] 1
Hits/KSLOC@level+ = [0+] 73.0704 [1+] 38.9548 [2+] 30.4863 [3+] 11.1299 [4+] 10.888 [5+] 0.241955
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.