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-png-0.1-7/src/read.c Examining data/r-cran-png-0.1-7/src/write.c FINAL RESULTS: data/r-cran-png-0.1-7/src/read.c:31:2: [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(data, rj->data + rj->ptr, to_read); data/r-cran-png-0.1-7/src/read.c:53:5: [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 header[8]; data/r-cran-png-0.1-7/src/read.c:68:6: [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). f = fopen(fn, "rb"); data/r-cran-png-0.1-7/src/read.c:167:6: [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 bo[4] = { 1, 0, 0, 0 }; data/r-cran-png-0.1-7/src/read.c:169:6: [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(&bi, bo, 4); data/r-cran-png-0.1-7/src/read.c:254:7: [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(idata, row_pointers[y], width * sizeof(int)); data/r-cran-png-0.1-7/src/read.c:307:44: [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. (((unsigned int)(((unsigned char *)row_pointers[y])[2 * (x * pln + p)])) << 8) | data/r-cran-png-0.1-7/src/read.c:308:44: [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. ((unsigned int)(((unsigned char *)row_pointers[y])[2 * (x * pln + p) + 1])) data/r-cran-png-0.1-7/src/write.c:37:6: [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(rj->data + rj->ptr, data, to_write); data/r-cran-png-0.1-7/src/write.c:160:6: [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). f = fopen(fn, "wb"); data/r-cran-png-0.1-7/src/write.c:236:7: [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(row_pointers[y], idata, width * sizeof(int)); data/r-cran-png-0.1-7/src/write.c:241:7: [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 bo[4] = { 1, 0, 0, 0 }; data/r-cran-png-0.1-7/src/write.c:243:7: [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(&bi, bo, 4); data/r-cran-png-0.1-7/src/write.c:299:6: [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(data, RAW(ve), this_len); ANALYSIS SUMMARY: Hits = 14 Lines analyzed = 642 in approximately 0.03 seconds (19434 lines/second) Physical Source Lines of Code (SLOC) = 546 Hits@level = [0] 1 [1] 0 [2] 14 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 15 [1+] 14 [2+] 14 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 27.4725 [1+] 25.641 [2+] 25.641 [3+] 0 [4+] 0 [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.