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/libpam-ufpidentity-1.0/check_user.c
Examining data/libpam-ufpidentity-1.0/pam_ufpidentity.c

FINAL RESULTS:

data/libpam-ufpidentity-1.0/pam_ufpidentity.c:96:9:  [4] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused).
        strcpy(ip , inet_ntoa(*addr_list[i]) );
data/libpam-ufpidentity-1.0/pam_ufpidentity.c:204:5:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
    sprintf(buffer, "%s (%s):", display_item->display_name, display_item->nickname);
data/libpam-ufpidentity-1.0/pam_ufpidentity.c:52:5:  [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 logname[80];
data/libpam-ufpidentity-1.0/pam_ufpidentity.c:107:9:  [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 ip[100];
data/libpam-ufpidentity-1.0/pam_ufpidentity.c:201:18:  [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 length = strlen(display_item->display_name) + strlen(display_item->nickname) + 5;       // a space, two parens, colon and terminating null
data/libpam-ufpidentity-1.0/pam_ufpidentity.c:201:55:  [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 length = strlen(display_item->display_name) + strlen(display_item->nickname) + 5;       // a space, two parens, colon and terminating null

ANALYSIS SUMMARY:

Hits = 6
Lines analyzed = 272 in approximately 0.03 seconds (8684 lines/second)
Physical Source Lines of Code (SLOC) = 216
Hits@level = [0]   5 [1]   2 [2]   2 [3]   0 [4]   2 [5]   0
Hits@level+ = [0+]  11 [1+]   6 [2+]   4 [3+]   2 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 50.9259 [1+] 27.7778 [2+] 18.5185 [3+] 9.25926 [4+] 9.25926 [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.