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/fprintd-1.90.1/pam/fingerprint-strings.h Examining data/fprintd-1.90.1/pam/pam_fprintd.c Examining data/fprintd-1.90.1/src/device.c Examining data/fprintd-1.90.1/src/file_storage.c Examining data/fprintd-1.90.1/src/file_storage.h Examining data/fprintd-1.90.1/src/fprintd.h Examining data/fprintd-1.90.1/src/main.c Examining data/fprintd-1.90.1/src/manager.c Examining data/fprintd-1.90.1/src/storage.h Examining data/fprintd-1.90.1/utils/delete.c Examining data/fprintd-1.90.1/utils/enroll.c Examining data/fprintd-1.90.1/utils/list.c Examining data/fprintd-1.90.1/utils/verify.c FINAL RESULTS: data/fprintd-1.90.1/pam/pam_fprintd.c:654:17: [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). max_tries = atoi (argv[i] + strlen (MAX_TRIES_MATCH)); data/fprintd-1.90.1/pam/pam_fprintd.c:665:15: [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). timeout = atoi (argv[i] + strlen (TIMEOUT_MATCH)); data/fprintd-1.90.1/src/file_storage.c:69:2: [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 fingername[2]; data/fprintd-1.90.1/pam/pam_fprintd.c:74:30: [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). return (strncmp (s, prefix, strlen (prefix)) == 0); data/fprintd-1.90.1/pam/pam_fprintd.c:640:23: [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). value = argv[i] + strlen (DEBUG_MATCH); data/fprintd-1.90.1/pam/pam_fprintd.c:653:60: [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). } else if (str_has_prefix (argv[i], MAX_TRIES_MATCH) && strlen(argv[i]) == strlen (MAX_TRIES_MATCH) + 1) { data/fprintd-1.90.1/pam/pam_fprintd.c:653:79: [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). } else if (str_has_prefix (argv[i], MAX_TRIES_MATCH) && strlen(argv[i]) == strlen (MAX_TRIES_MATCH) + 1) { data/fprintd-1.90.1/pam/pam_fprintd.c:654:33: [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). max_tries = atoi (argv[i] + strlen (MAX_TRIES_MATCH)); data/fprintd-1.90.1/pam/pam_fprintd.c:658:22: [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). argv[i] + strlen (MAX_TRIES_MATCH), DEFAULT_MAX_TRIES); data/fprintd-1.90.1/pam/pam_fprintd.c:664:58: [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). } else if (str_has_prefix (argv[i], TIMEOUT_MATCH) && strlen(argv[i]) <= strlen (TIMEOUT_MATCH) + 2) { data/fprintd-1.90.1/pam/pam_fprintd.c:664:77: [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). } else if (str_has_prefix (argv[i], TIMEOUT_MATCH) && strlen(argv[i]) <= strlen (TIMEOUT_MATCH) + 2) { data/fprintd-1.90.1/pam/pam_fprintd.c:665:31: [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). timeout = atoi (argv[i] + strlen (TIMEOUT_MATCH)); data/fprintd-1.90.1/src/file_storage.c:232:20: [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). if (*ent == 0 || strlen(ent) != 1) ANALYSIS SUMMARY: Hits = 13 Lines analyzed = 3976 in approximately 0.13 seconds (31178 lines/second) Physical Source Lines of Code (SLOC) = 2951 Hits@level = [0] 0 [1] 10 [2] 3 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 13 [1+] 13 [2+] 3 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 4.40529 [1+] 4.40529 [2+] 1.0166 [3+] 0 [4+] 0 [5+] 0 Dot directories skipped = 2 (--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.