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/ruby-kyotocabinet-1.33/kyotocabinet.cc FINAL RESULTS: data/ruby-kyotocabinet-1.33/kyotocabinet.cc:967:3: [4] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. sprintf(xname, "X%s", name); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:639:7: [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 kbuf[kc::NUMBUFSIZ]; data/ruby-kyotocabinet-1.33/kyotocabinet.cc:640:26: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. size_t ksiz = std::sprintf(kbuf, "%d", (int)FIX2INT(vobj)); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:649:3: [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 kbuf[kc::NUMBUFSIZ*2]; data/ruby-kyotocabinet-1.33/kyotocabinet.cc:650:8: [2] (buffer) sprintf: Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or vsnprintf. Risk is low because the source has a constant maximum length. std::sprintf(kbuf, "#<Object:0x%llx>", (long long)rb_obj_id(vobj)); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:849:21: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). int64_t num = kc::atoi(RSTRING_PTR(vstr)); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:966:3: [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 xname[kc::NUMBUFSIZ]; data/ruby-kyotocabinet-1.33/kyotocabinet.cc:980:25: [2] (integer) atoi: Unless checked, the resulting number can exceed the expected range (CWE-190). If source untrusted, check both minimum and maximum, even if the input had no minus sign (large numbers can roll over into negative number; consider saving to an unsigned value if that is intended). uint32_t code = kc::atoi(expr); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:2148:20: [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). rv_ = db_->open(path_, mode_); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:2159:14: [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). rv = db->open(path, mode); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:4032:7: [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(kbuf_, kbuf, ksiz); data/ruby-kyotocabinet-1.33/kyotocabinet.cc:4036:7: [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(vbuf_, vbuf, vsiz); ANALYSIS SUMMARY: Hits = 12 Lines analyzed = 4172 in approximately 0.12 seconds (36251 lines/second) Physical Source Lines of Code (SLOC) = 3501 Hits@level = [0] 0 [1] 0 [2] 11 [3] 0 [4] 1 [5] 0 Hits@level+ = [0+] 12 [1+] 12 [2+] 12 [3+] 1 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 3.42759 [1+] 3.42759 [2+] 3.42759 [3+] 0.285633 [4+] 0.285633 [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.