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/png23d-1.10/mesh_simplify.h Examining data/png23d-1.10/option.h Examining data/png23d-1.10/out_pgm.c Examining data/png23d-1.10/mesh.h Examining data/png23d-1.10/out_pscad.h Examining data/png23d-1.10/mesh_index.c Examining data/png23d-1.10/out_rscad.c Examining data/png23d-1.10/bitmap.h Examining data/png23d-1.10/png23d.c Examining data/png23d-1.10/out_stl.c Examining data/png23d-1.10/mesh_gen.h Examining data/png23d-1.10/out_pscad.c Examining data/png23d-1.10/mesh_simplify.c Examining data/png23d-1.10/out_stl.h Examining data/png23d-1.10/out_rscad.h Examining data/png23d-1.10/out_pgm.h Examining data/png23d-1.10/option.c Examining data/png23d-1.10/mesh_gen.c Examining data/png23d-1.10/mesh_math.h Examining data/png23d-1.10/mesh.c Examining data/png23d-1.10/mesh_index.h Examining data/png23d-1.10/bitmap.c FINAL RESULTS: data/png23d-1.10/option.h:20:41: [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. #define INFO(...) if (options->verbose) printf(__VA_ARGS__) data/png23d-1.10/option.c:49:19: [3] (buffer) getopt: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. while ((opt = getopt(argc, argv, "Vvf:w:d:h:m:t:l:o:O:b:c:")) != -1) { data/png23d-1.10/bitmap.c:49:14: [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). fp = fopen(filename, "rb"); data/png23d-1.10/mesh.c:34:22: [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). mesh->dumpfile = fopen(filename, "w"); data/png23d-1.10/mesh_simplify.c:228:9: [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(facet, rfacet, sizeof(struct facet)); data/png23d-1.10/png23d.c:54:14: [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). fd = open(options->outfile, ANALYSIS SUMMARY: Hits = 6 Lines analyzed = 3069 in approximately 0.09 seconds (32335 lines/second) Physical Source Lines of Code (SLOC) = 1951 Hits@level = [0] 73 [1] 0 [2] 4 [3] 1 [4] 1 [5] 0 Hits@level+ = [0+] 79 [1+] 6 [2+] 6 [3+] 2 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 40.4921 [1+] 3.07535 [2+] 3.07535 [3+] 1.02512 [4+] 0.512558 [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.