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/aesfix-1.0.1/aesfix.cpp
Examining data/aesfix-1.0.1/aes.h
Examining data/aesfix-1.0.1/errvect.cpp
Examining data/aesfix-1.0.1/errvect.h

FINAL RESULTS:

data/aesfix-1.0.1/aesfix.cpp:249:5:  [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 a[3];
data/aesfix-1.0.1/aesfix.cpp:267:13:  [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).
  FILE *f = fopen(filename, "r");
data/aesfix-1.0.1/aesfix.cpp:250:17:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    if ((a[0] = fgetc(f)) == EOF)
data/aesfix-1.0.1/aesfix.cpp:255:19:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
      if ((a[1] = fgetc(f)) == EOF)

ANALYSIS SUMMARY:

Hits = 4
Lines analyzed = 461 in approximately 0.02 seconds (18450 lines/second)
Physical Source Lines of Code (SLOC) = 365
Hits@level = [0]  10 [1]   2 [2]   2 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  14 [1+]   4 [2+]   2 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 38.3562 [1+] 10.9589 [2+] 5.47945 [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.