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/exfatprogs-1.0.4/include/exfat_ondisk.h Examining data/exfatprogs-1.0.4/include/libexfat.h Examining data/exfatprogs-1.0.4/include/list.h Examining data/exfatprogs-1.0.4/include/version.h Examining data/exfatprogs-1.0.4/lib/libexfat.c Examining data/exfatprogs-1.0.4/mkfs/mkfs.h Examining data/exfatprogs-1.0.4/mkfs/upcase.c Examining data/exfatprogs-1.0.4/mkfs/mkfs.c Examining data/exfatprogs-1.0.4/tune/tune.c Examining data/exfatprogs-1.0.4/fsck/fsck.c Examining data/exfatprogs-1.0.4/fsck/repair.c Examining data/exfatprogs-1.0.4/fsck/fsck.h Examining data/exfatprogs-1.0.4/fsck/repair.h Examining data/exfatprogs-1.0.4/fsck/de_iter.c FINAL RESULTS: data/exfatprogs-1.0.4/fsck/repair.c:108:2: [4] (format) vprintf: If format strings can be influenced by an attacker, they can be exploited (CWE-134). Use a constant for the format specification. vprintf(desc, ap); data/exfatprogs-1.0.4/include/libexfat.h:103:4: [4] (format) fprintf: If format strings can be influenced by an attacker, they can be exploited (CWE-134). Use a constant for the format specification. fprintf(dir, fmt, ##__VA_ARGS__); \ data/exfatprogs-1.0.4/fsck/fsck.c:1432:14: [3] (buffer) getopt_long: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. while ((c = getopt_long(argc, argv, "rynpVvh", opts, NULL)) != EOF) { data/exfatprogs-1.0.4/mkfs/mkfs.c:596:14: [3] (buffer) getopt_long: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. while ((c = getopt_long(argc, argv, "n:L:c:b:fVvh", opts, NULL)) != EOF) data/exfatprogs-1.0.4/tune/tune.c:151:14: [3] (buffer) getopt_long: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. while ((c = getopt_long(argc, argv, "L:lVvh", opts, NULL)) != EOF) data/exfatprogs-1.0.4/fsck/fsck.c:65:2: [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 local_path[PATH_MAX * MB_LEN_MAX + 1]; data/exfatprogs-1.0.4/fsck/fsck.c:332:3: [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((char *)utf16_path, (char *)ctx->ancestors[i]->name, data/exfatprogs-1.0.4/fsck/fsck.c:335:3: [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((char *)utf16_path, &utf16_slash, sizeof(utf16_slash)); data/exfatprogs-1.0.4/fsck/fsck.c:341:2: [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((char *)utf16_path, &utf16_null, sizeof(utf16_null)); data/exfatprogs-1.0.4/fsck/fsck.c:884:3: [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(node->name + data/exfatprogs-1.0.4/fsck/fsck.c:1374:9: [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. static char buf[15*4]; data/exfatprogs-1.0.4/fsck/fsck.h:65:2: [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 volume_label[VOLUME_LABEL_BUFFER_SIZE]; data/exfatprogs-1.0.4/fsck/repair.c:62:2: [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 answer[8]; data/exfatprogs-1.0.4/include/libexfat.h:60:2: [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 dev_name[255]; data/exfatprogs-1.0.4/lib/libexfat.c:148:7: [2] (misc) open: 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). fd = open(ui->dev_name, ui->writeable ? O_RDWR|O_EXCL : O_RDONLY); data/exfatprogs-1.0.4/lib/libexfat.c:261:2: [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 c_str[MB_LEN_MAX]; data/exfatprogs-1.0.4/lib/libexfat.c:316:3: [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(out_str+out_len, c_str, c_len); data/exfatprogs-1.0.4/mkfs/mkfs.c:52:2: [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(pbpb->oem_name, "EXFAT ", 8); data/exfatprogs-1.0.4/mkfs/mkfs.c:377:2: [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(ed[0].vol_label, ui->volume_label, ui->volume_label_len); data/exfatprogs-1.0.4/mkfs/upcase.c:15:23: [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. static const unsigned char upcase_table[EXFAT_UPCASE_TABLE_SIZE] = { data/exfatprogs-1.0.4/tune/tune.c:70:2: [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 volume_label[VOLUME_LABEL_BUFFER_SIZE]; data/exfatprogs-1.0.4/tune/tune.c:116:2: [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(vol.vol_label, volume_label, volume_label_len); data/exfatprogs-1.0.4/tune/tune.c:142:2: [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 label_input[VOLUME_LABEL_BUFFER_SIZE]; ANALYSIS SUMMARY: Hits = 23 Lines analyzed = 4555 in approximately 0.19 seconds (24088 lines/second) Physical Source Lines of Code (SLOC) = 3634 Hits@level = [0] 32 [1] 0 [2] 18 [3] 3 [4] 2 [5] 0 Hits@level+ = [0+] 55 [1+] 23 [2+] 23 [3+] 5 [4+] 2 [5+] 0 Hits/KSLOC@level+ = [0+] 15.1348 [1+] 6.32911 [2+] 6.32911 [3+] 1.37589 [4+] 0.550358 [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.