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-discount-2.1.8/css.c
Examining data/lua-discount-2.1.8/resource.c
Examining data/lua-discount-2.1.8/cstring.h
Examining data/lua-discount-2.1.8/mkdio.c
Examining data/lua-discount-2.1.8/xml.c
Examining data/lua-discount-2.1.8/ldiscount.c
Examining data/lua-discount-2.1.8/emmatch.c
Examining data/lua-discount-2.1.8/basename.c
Examining data/lua-discount-2.1.8/markdown.h
Examining data/lua-discount-2.1.8/mkdio.h
Examining data/lua-discount-2.1.8/generate.c
Examining data/lua-discount-2.1.8/toc.c
Examining data/lua-discount-2.1.8/docheader.c
Examining data/lua-discount-2.1.8/markdown.c
Examining data/lua-discount-2.1.8/config.h
Examining data/lua-discount-2.1.8/dumptree.c
Examining data/lua-discount-2.1.8/amalloc.h
Examining data/lua-discount-2.1.8/Csio.c
FINAL RESULTS:
data/lua-discount-2.1.8/Csio.c:22:9: [4] (format) vsnprintf:
If format strings can be influenced by an attacker, they can be exploited,
and note that sprintf variations do not always \0-terminate (CWE-134). Use
a constant for the format specification.
siz = vsnprintf(T(*iot) + S(*iot), ALLOCATED(*iot) - S(*iot),
data/lua-discount-2.1.8/basename.c:24:3: [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(ret, base);
data/lua-discount-2.1.8/generate.c:133:2: [4] (format) vsnprintf:
If format strings can be influenced by an attacker, they can be exploited,
and note that sprintf variations do not always \0-terminate (CWE-134). Use
a constant for the format specification.
vsnprintf(bfr, sizeof bfr, fmt, ptr);
data/lua-discount-2.1.8/markdown.c:619:4: [4] (buffer) sprintf:
Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
vsnprintf.
sprintf(p->ident, "%s=\"%.*s\"", prefix,
data/lua-discount-2.1.8/config.h:11:20: [3] (random) srand:
This function is not sufficiently random for security-related functions
such as key and nonce creation (CWE-327). Use a more secure technique for
acquiring random values.
#define INITRNG(x) srand((unsigned int)x)
data/lua-discount-2.1.8/Csio.c:36:2: [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(T(*iot) + S(*iot), bfr, size);
data/lua-discount-2.1.8/cstring.h:48:2: [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(((S(t) += (sz)) - (sz)) + \
data/lua-discount-2.1.8/cstring.h:59:2: [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(T(t), (p), (sz)); \
data/lua-discount-2.1.8/emmatch.c:87:2: [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 open[10];
data/lua-discount-2.1.8/emmatch.c:87:7: [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).
char open[10];
data/lua-discount-2.1.8/emmatch.c:88:2: [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 close[10];
data/lua-discount-2.1.8/emmatch.c:135:43: [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).
PREFIX(start->b_text, emtags[match - 1].open,
data/lua-discount-2.1.8/generate.c:129:2: [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 bfr[80];
data/lua-discount-2.1.8/basename.c:23:20: [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).
(ret = malloc(strlen(base) + size + 2))) {
data/lua-discount-2.1.8/basename.c:25:3: [1] (buffer) strncat:
Easily used incorrectly (e.g., incorrectly computing the correct maximum
size to add) [MS-banned] (CWE-120). Consider strcat_s, strlcat, snprintf,
or automatically resizing strings.
strncat(ret, string, size);
data/lua-discount-2.1.8/generate.c:445:17: [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).
puturl(edit, strlen(edit), f, 0);
data/lua-discount-2.1.8/generate.c:808:14: [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).
if (!(len = strlen(s)))
data/lua-discount-2.1.8/markdown.c:618:29: [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).
if (p->ident = malloc(4 + strlen(prefix) + S(q->text)))
data/lua-discount-2.1.8/mkdio.c:82:30: [1] (buffer) getc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
Document *populate(getc_func getc, void *ctx, int flags)
data/lua-discount-2.1.8/mkdio.c:98:16: [1] (buffer) getc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
while ((c = (*getc)(ctx)) != EOF) {
data/lua-discount-2.1.8/mkdio.c:141:29: [1] (buffer) fgetc:
Check buffer boundaries if used in a loop including recursive loops
(CWE-120, CWE-20).
return populate((getc_func)fgetc, f, flags & INPUT_MASK);
data/lua-discount-2.1.8/xml.c:74:24: [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).
Cswrite(&f, entity, strlen(entity));
ANALYSIS SUMMARY:
Hits = 22
Lines analyzed = 4111 in approximately 0.14 seconds (29592 lines/second)
Physical Source Lines of Code (SLOC) = 2976
Hits@level = [0] 11 [1] 9 [2] 8 [3] 1 [4] 4 [5] 0
Hits@level+ = [0+] 33 [1+] 22 [2+] 13 [3+] 5 [4+] 4 [5+] 0
Hits/KSLOC@level+ = [0+] 11.0887 [1+] 7.39247 [2+] 4.36828 [3+] 1.68011 [4+] 1.34409 [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.