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/r-cran-urltools-1.7.3+dfsg/src/suffix.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/punycode.h Examining data/r-cran-urltools-1.7.3+dfsg/src/punycode.c Examining data/r-cran-urltools-1.7.3+dfsg/src/puny.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/utf8.c Examining data/r-cran-urltools-1.7.3+dfsg/src/compose.h Examining data/r-cran-urltools-1.7.3+dfsg/src/parsing.h Examining data/r-cran-urltools-1.7.3+dfsg/src/parameter.h Examining data/r-cran-urltools-1.7.3+dfsg/src/parsing.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/credentials.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/encoding.h Examining data/r-cran-urltools-1.7.3+dfsg/src/utf8.h Examining data/r-cran-urltools-1.7.3+dfsg/src/compose.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/encoding.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/parameter.cpp Examining data/r-cran-urltools-1.7.3+dfsg/src/RcppExports.cpp FINAL RESULTS: data/r-cran-urltools-1.7.3+dfsg/src/utf8.c:25:9: [4] (format) snprintf: 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. #define snprintf _snprintf data/r-cran-urltools-1.7.3+dfsg/src/utf8.c:25:18: [4] (format) _snprintf: 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. #define snprintf _snprintf data/r-cran-urltools-1.7.3+dfsg/src/puny.cpp:12:8: [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[BUFLENT]; data/r-cran-urltools-1.7.3+dfsg/src/utf8.c:40:14: [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 const char trailingBytesForUTF8[256] = { data/r-cran-urltools-1.7.3+dfsg/src/puny.cpp:90:24: [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). const int slen = strlen(s); data/r-cran-urltools-1.7.3+dfsg/src/puny.cpp:181:24: [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). const int slen = strlen(s); ANALYSIS SUMMARY: Hits = 6 Lines analyzed = 2925 in approximately 0.11 seconds (26788 lines/second) Physical Source Lines of Code (SLOC) = 1783 Hits@level = [0] 0 [1] 2 [2] 2 [3] 0 [4] 2 [5] 0 Hits@level+ = [0+] 6 [1+] 6 [2+] 4 [3+] 2 [4+] 2 [5+] 0 Hits/KSLOC@level+ = [0+] 3.36511 [1+] 3.36511 [2+] 2.24341 [3+] 1.1217 [4+] 1.1217 [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.