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/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c
Examining data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.h
Examining data/lua-wsapi-1.6.1/src/launcher/launcher.c
Examining data/lua-wsapi-1.6.1/src/launcher/wsapi.c
FINAL RESULTS:
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:226:9: [4] (shell) popen:
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.
*pf = popen(filename, mode);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:476:11: [4] (format) fprintf:
If format strings can be influenced by an attacker, they can be exploited
(CWE-134). Use a constant for the format specification.
fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:599:30: [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.
char *val = getenv(envVar);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:198:3: [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 buff[128];
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:201:5: [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(buff, "closed");
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:203:5: [2] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf. Risk is low because the source has a constant maximum length.
sprintf(buff, "%p", lua_touserdata(L, 1));
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:213:9: [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).
*pf = fopen(filename, mode);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:234:9: [2] (tmpfile) tmpfile:
Function tmpfile() has a security flaw on some systems (e.g., older System
V systems) (CWE-377).
*pf = tmpfile();
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:252:13: [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).
*pf = fopen(filename, mode);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:309:11: [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).
*pf = fopen(filename, "r");
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:327:3: [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 buf[32], ch;
data/lua-wsapi-1.6.1/src/launcher/launcher.c:68:2: [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[ MAX_PATH ];
data/lua-wsapi-1.6.1/src/launcher/launcher.c:77:3: [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(name, ".cgi");
data/lua-wsapi-1.6.1/src/launcher/wsapi.c:69:2: [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[ MAX_PATH ];
data/lua-wsapi-1.6.1/src/launcher/wsapi.c:72:2: [2] (buffer) TCHAR:
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.
TCHAR lua_string[10000];
data/lua-wsapi-1.6.1/src/launcher/wsapi.c:78:4: [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(name, ".lua");
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:330:10: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
ch = fgetc (f);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:348:11: [1] (buffer) getc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
int c = getc(f);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:365:9: [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).
l = strlen(p);
data/lua-wsapi-1.6.1/src/fastcgi/lfcgi.c:539:8: [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).
len = strlen(name);
ANALYSIS SUMMARY:
Hits = 20
Lines analyzed = 895 in approximately 0.08 seconds (11567 lines/second)
Physical Source Lines of Code (SLOC) = 656
Hits@level = [0] 9 [1] 4 [2] 13 [3] 1 [4] 2 [5] 0
Hits@level+ = [0+] 29 [1+] 20 [2+] 16 [3+] 3 [4+] 2 [5+] 0
Hits/KSLOC@level+ = [0+] 44.2073 [1+] 30.4878 [2+] 24.3902 [3+] 4.57317 [4+] 3.04878 [5+] 0
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.