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-sparsesvd-0.2/src/main.c Examining data/r-cran-sparsesvd-0.2/src/svdlib.c Examining data/r-cran-sparsesvd-0.2/src/svdlib.h Examining data/r-cran-sparsesvd-0.2/src/svdutil.c Examining data/r-cran-sparsesvd-0.2/src/svdutil.h Examining data/r-cran-sparsesvd-0.2/src/las2.c FINAL RESULTS: data/r-cran-sparsesvd-0.2/src/svdlib.c:318:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(title, "SVDLIBC v. %s", SVDVersion); data/r-cran-sparsesvd-0.2/src/svdutil.c:133:15: [4] (shell) popen: This causes a new program to execute and is difficult to use safely (CWE-78). try using a library call that implements the same functionality if available. if ((pipe = popen(pipeName, mode))) registerPipe(pipe); data/r-cran-sparsesvd-0.2/src/svdutil.c:139:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(buf, "%s < %s 2>/dev/null", command, fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:187:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(fileBuf, "%s.gz", fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:191:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(fileBuf, "%s.Z", fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:195:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(fileBuf, "%s.bz2", fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:199:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(fileBuf, "%s.bz", fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:210:5: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(buf, "%s %s \"%s\"", BZIP2, op, fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:212:5: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(buf, "%s %s \"%s\"", COMPRESS, op, fileName); data/r-cran-sparsesvd-0.2/src/svdutil.c:214:5: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(buf, "%s %s \"%s\"", ZIP, op, fileName); data/r-cran-sparsesvd-0.2/src/svdlib.c:258:3: [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 line[128]; data/r-cran-sparsesvd-0.2/src/svdlib.c:317:3: [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 title[32]; data/r-cran-sparsesvd-0.2/src/svdutil.c:138:3: [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[MAX_FILENAME]; data/r-cran-sparsesvd-0.2/src/svdutil.c:159:3: [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 fileBuf[MAX_FILENAME]; data/r-cran-sparsesvd-0.2/src/svdutil.c:185:12: [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). return fopen(fileName, "r"); data/r-cran-sparsesvd-0.2/src/svdutil.c:207:3: [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[MAX_FILENAME]; data/r-cran-sparsesvd-0.2/src/svdutil.c:232:21: [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). return (append) ? fopen(fileName, "a") : fopen(fileName, "w"); data/r-cran-sparsesvd-0.2/src/svdutil.c:232:44: [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). return (append) ? fopen(fileName, "a") : fopen(fileName, "w"); data/r-cran-sparsesvd-0.2/src/svdutil.c:151:12: [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). int ls = strlen(s); data/r-cran-sparsesvd-0.2/src/svdutil.c:152:12: [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). int lt = strlen(t); ANALYSIS SUMMARY: Hits = 20 Lines analyzed = 3627 in approximately 0.13 seconds (28755 lines/second) Physical Source Lines of Code (SLOC) = 2008 Hits@level = [0] 30 [1] 2 [2] 8 [3] 0 [4] 10 [5] 0 Hits@level+ = [0+] 50 [1+] 20 [2+] 18 [3+] 10 [4+] 10 [5+] 0 Hits/KSLOC@level+ = [0+] 24.9004 [1+] 9.96016 [2+] 8.96414 [3+] 4.98008 [4+] 4.98008 [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.