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/tint-0.06/config.h Examining data/tint-0.06/engine.c Examining data/tint-0.06/engine.h Examining data/tint-0.06/io.c Examining data/tint-0.06/io.h Examining data/tint-0.06/tint.c Examining data/tint-0.06/typedefs.h Examining data/tint-0.06/utils.c Examining data/tint-0.06/utils.h FINAL RESULTS: data/tint-0.06/tint.c:381:4: [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 (header,SCORE_HEADER); data/tint-0.06/tint.c:470:4: [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 (header,SCORE_HEADER); data/tint-0.06/utils.c:42:4: [3] (random) srand: This function is not sufficiently random for security-related functions such as key and nonce creation (CWE-327). Use a more secure technique for acquiring random values. srand (time (NULL)); data/tint-0.06/utils.c:44:4: [3] (random) srandom: This function is not sufficiently random for security-related functions such as key and nonce creation (CWE-327). Use a more secure technique for acquiring random values. srandom (time (NULL)); data/tint-0.06/utils.c:56:12: [3] (random) random: This function is not sufficiently random for security-related functions such as key and nonce creation (CWE-327). Use a more secure technique for acquiring random values. return (random () % range); data/tint-0.06/engine.c:161:4: [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 (&test,shape,sizeof (shape_t)); data/tint-0.06/engine.c:165:3: [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 (shape,&test,sizeof (shape_t)); data/tint-0.06/engine.c:235:4: [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 (board,newboard,sizeof (board_t)); data/tint-0.06/engine.c:254:4: [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 (engine->shapes,SHAPES,sizeof (shapes_t)); data/tint-0.06/engine.c:315:3: [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 (engine->shapes,SHAPES,sizeof (shapes_t)); data/tint-0.06/tint.c:187:4: [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 tmp[MAXDIGITS + 1]; data/tint-0.06/tint.c:320:4: [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 name[NAMELEN]; data/tint-0.06/tint.c:369:4: [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 header[strlen (SCORE_HEADER)+1]; data/tint-0.06/tint.c:373:3: [2] (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). Risk is low because the source is a constant string. strcpy (scores[i].name,"None"); data/tint-0.06/tint.c:380:18: [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). if ((handle = fopen (scorefile,"w")) == NULL) err1 (); data/tint-0.06/tint.c:422:4: [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 header[strlen (SCORE_HEADER)+1]; data/tint-0.06/tint.c:424:18: [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). if ((handle = fopen (scorefile,"r")) == NULL) data/tint-0.06/tint.c:469:18: [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). if ((handle = fopen (scorefile,"w")) == NULL) err2 (); data/tint-0.06/tint.c:551:4: [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 buf[NAMELEN]; data/tint-0.06/tint.c:211:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 3); data/tint-0.06/tint.c:220:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 5); data/tint-0.06/tint.c:231:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 7); data/tint-0.06/tint.c:242:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 9); data/tint-0.06/tint.c:253:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 11); data/tint-0.06/tint.c:264:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 13); data/tint-0.06/tint.c:276:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 15); data/tint-0.06/tint.c:284:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 18); data/tint-0.06/tint.c:291:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 20); data/tint-0.06/tint.c:298:31: [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). out_gotoxy (out_width () - strlen (tmp) - 1,YTOP + 21); data/tint-0.06/tint.c:333:9: [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). name[strlen (name) - 1] = '\0'; data/tint-0.06/tint.c:335:9: [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 (!strlen (name) && pw != NULL) data/tint-0.06/tint.c:337:3: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy (name,pw->pw_name,NAMELEN); data/tint-0.06/tint.c:369:16: [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). char header[strlen (SCORE_HEADER)+1]; data/tint-0.06/tint.c:382:23: [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). i = fwrite (header,strlen (SCORE_HEADER),1,handle); data/tint-0.06/tint.c:386:30: [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). j = fwrite (scores[i].name,strlen (scores[i].name) + 1,1,handle); data/tint-0.06/tint.c:422:16: [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). char header[strlen (SCORE_HEADER)+1]; data/tint-0.06/tint.c:429:22: [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). i = fread (header,strlen (SCORE_HEADER),1,handle); data/tint-0.06/tint.c:430:50: [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 ((i != 1) || (strncmp (SCORE_HEADER,header,strlen (SCORE_HEADER)) != 0)) data/tint-0.06/tint.c:438:16: [1] (buffer) fgetc: Check buffer boundaries if used in a loop including recursive loops (CWE-120, CWE-20). while ((ch = fgetc (handle)) != '\0') data/tint-0.06/tint.c:471:23: [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). i = fwrite (header,strlen (SCORE_HEADER),1,handle); data/tint-0.06/tint.c:475:30: [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). j = fwrite (scores[i].name,strlen (scores[i].name) + 1,1,handle); data/tint-0.06/tint.c:537:24: [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 (i >= argc || strlen(argv[i]) < 1) showhelp(); data/tint-0.06/tint.c:557:7: [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). buf[strlen (buf) - 1] = '\0'; ANALYSIS SUMMARY: Hits = 43 Lines analyzed = 1682 in approximately 0.06 seconds (27505 lines/second) Physical Source Lines of Code (SLOC) = 1035 Hits@level = [0] 32 [1] 24 [2] 14 [3] 3 [4] 2 [5] 0 Hits@level+ = [0+] 75 [1+] 43 [2+] 19 [3+] 5 [4+] 2 [5+] 0 Hits/KSLOC@level+ = [0+] 72.4638 [1+] 41.5459 [2+] 18.3575 [3+] 4.83092 [4+] 1.93237 [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.