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/libapache2-mod-authz-unixgroup-1.1.0/mod_authz_unixgroup.c

FINAL RESULTS:

data/libapache2-mod-authz-unixgroup-1.1.0/mod_authz_unixgroup.c:75:15:  [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).
	    int gid= atoi(w);

ANALYSIS SUMMARY:

Hits = 1
Lines analyzed = 196 in approximately 0.02 seconds (7982 lines/second)
Physical Source Lines of Code (SLOC) = 130
Hits@level = [0]   0 [1]   0 [2]   1 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   1 [1+]   1 [2+]   1 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 7.69231 [1+] 7.69231 [2+] 7.69231 [3+]   0 [4+]   0 [5+]   0
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.