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/lunzip-1.11/decoder.c
Examining data/lunzip-1.11/lzip_index.h
Examining data/lunzip-1.11/carg_parser.c
Examining data/lunzip-1.11/carg_parser.h
Examining data/lunzip-1.11/lzip_index.c
Examining data/lunzip-1.11/main.c
Examining data/lunzip-1.11/list.c
Examining data/lunzip-1.11/decoder.h
Examining data/lunzip-1.11/lzip.h
FINAL RESULTS:
data/lunzip-1.11/main.c:312:7: [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( output_filename, name );
data/lunzip-1.11/main.c:313:7: [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( output_filename + name_len - from_len, known_extensions[eindex].to );
data/lunzip-1.11/main.c:318:3: [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( output_filename, name );
data/lunzip-1.11/main.c:773:11: [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( output_filename, default_output_filename );
data/lunzip-1.11/carg_parser.c:160:5: [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 code_str[2];
data/lunzip-1.11/decoder.h:75:5: [2] (buffer) memcpy:
Does not check for buffer overflows when copying to destination (CWE-120).
Make sure destination can always hold the source data.
memcpy( outbuf + sz, rdec->buffer + rdec->pos, rd );
data/lunzip-1.11/decoder.h:288:7: [2] (buffer) memcpy:
Does not check for buffer overflows when copying to destination (CWE-120).
Make sure destination can always hold the source data.
memcpy( d->buffer + lpos, d->buffer + i, len );
data/lunzip-1.11/lzip_index.c:102:3: [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[80];
data/lunzip-1.11/lzip_index.c:174:5: [2] (buffer) memcpy:
Does not check for buffer overflows when copying to destination (CWE-120).
Make sure destination can always hold the source data.
memcpy( buffer + rd_size, buffer, buffer_size - rd_size );
data/lunzip-1.11/main.c:179:10: [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[80];
data/lunzip-1.11/main.c:189:10: [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[bufsize];
data/lunzip-1.11/main.c:190:9: [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.
const char * const prefix[8] =
data/lunzip-1.11/main.c:319:3: [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( output_filename, ".out" );
data/lunzip-1.11/main.c:329:14: [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 infd = open( name, O_RDONLY | O_BINARY );
data/lunzip-1.11/main.c:362:11: [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).
outfd = open( output_filename, flags, outfd_mode );
data/lunzip-1.11/main.c:459:5: [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[80];
data/lunzip-1.11/carg_parser.c:38:19: [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).
const int len = strlen( argument );
data/lunzip-1.11/carg_parser.c:50:3: [1] (buffer) strncpy:
Easily used incorrectly; doesn't always \0-terminate or check for invalid
pointers [MS-banned] (CWE-120).
strncpy( p->argument, argument, len + 1 );
data/lunzip-1.11/carg_parser.c:58:19: [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).
const int len = strlen( msg );
data/lunzip-1.11/carg_parser.c:62:3: [1] (buffer) strncpy:
Easily used incorrectly; doesn't always \0-terminate or check for invalid
pointers [MS-banned] (CWE-120).
strncpy( ap->error + ap->error_size, msg, len + 1 );
data/lunzip-1.11/carg_parser.c:92:11: [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).
if( strlen( options[i].name ) == len ) /* Exact match found */
data/lunzip-1.11/decoder.c:44:19: [1] (buffer) read:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
const int n = read( fd, buf + sz, size - sz );
data/lunzip-1.11/lzip.h:144:20: [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).
stdin_name_len = strlen( pp->stdin_name );
data/lunzip-1.11/lzip.h:148:69: [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).
const unsigned len = (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s );
data/lunzip-1.11/lzip.h:162:14: [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).
name_len = strlen( pp->name );
data/lunzip-1.11/lzip_index.c:43:19: [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).
const int len = strlen( msg );
data/lunzip-1.11/lzip_index.c:47:3: [1] (buffer) strncpy:
Easily used incorrectly; doesn't always \0-terminate or check for invalid
pointers [MS-banned] (CWE-120).
strncpy( li->error + li->error_size, msg, len + 1 );
data/lunzip-1.11/main.c:213:50: [1] (obsolete) ulimit:
This C routine is considered obsolete (as opposed to the shell command by
the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
setrlimit(2), and sysconf(3) instead.
const unsigned long ulimit )
data/lunzip-1.11/main.c:249:11: [1] (obsolete) ulimit:
This C routine is considered obsolete (as opposed to the shell command by
the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
setrlimit(2), and sysconf(3) instead.
if( ulimit / factor >= result ) result *= factor;
data/lunzip-1.11/main.c:253:47: [1] (obsolete) ulimit:
This C routine is considered obsolete (as opposed to the shell command by
the same name, which is NOT obsolete) (CWE-676). Use getrlimit(2),
setrlimit(2), and sysconf(3) instead.
if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
data/lunzip-1.11/main.c:291:31: [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).
const unsigned name_len = strlen( name );
data/lunzip-1.11/main.c:292:30: [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).
const unsigned ext_len = strlen( ext );
data/lunzip-1.11/main.c:303:29: [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).
const unsigned name_len = strlen( name );
data/lunzip-1.11/main.c:307:31: [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).
const unsigned from_len = strlen( from );
data/lunzip-1.11/main.c:311:40: [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).
strlen( known_extensions[eindex].to ) + 1 );
data/lunzip-1.11/main.c:772:31: [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).
strlen( default_output_filename ) + 1 );
ANALYSIS SUMMARY:
Hits = 36
Lines analyzed = 2737 in approximately 0.09 seconds (29956 lines/second)
Physical Source Lines of Code (SLOC) = 2209
Hits@level = [0] 37 [1] 20 [2] 12 [3] 0 [4] 4 [5] 0
Hits@level+ = [0+] 73 [1+] 36 [2+] 16 [3+] 4 [4+] 4 [5+] 0
Hits/KSLOC@level+ = [0+] 33.0466 [1+] 16.297 [2+] 7.2431 [3+] 1.81077 [4+] 1.81077 [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.