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-ruid2-0.9.8/debian/patches/mod_ruid2.c Examining data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c FINAL RESULTS: data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c:439:9: [3] (misc) chroot: chroot can be very helpful, but is hard to use correctly (CWE-250, CWE-22). Make sure the program immediately chdir("/"), closes file descriptors, and drops root privileges, and that all necessary files (and no more!) are in the new root. if (chroot(".") != 0) { data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c:593:7: [3] (misc) chroot: chroot can be very helpful, but is hard to use correctly (CWE-250, CWE-22). Make sure the program immediately chdir("/"), closes file descriptors, and drops root privileges, and that all necessary files (and no more!) are in the new root. if (chroot(conf->chroot_dir) != 0) data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c:153:4: [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(conf->groups, child->groups, sizeof(child->groups)); data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c:156:4: [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(conf->groups, parent->groups, sizeof(parent->groups)); data/libapache2-mod-ruid2-0.9.8/mod_ruid2.c:363:22: [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). if ((root_handle = open("/.", O_RDONLY)) < 0) { ANALYSIS SUMMARY: Hits = 5 Lines analyzed = 685 in approximately 0.04 seconds (15561 lines/second) Physical Source Lines of Code (SLOC) = 490 Hits@level = [0] 0 [1] 0 [2] 3 [3] 2 [4] 0 [5] 0 Hits@level+ = [0+] 5 [1+] 5 [2+] 5 [3+] 2 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 10.2041 [1+] 10.2041 [2+] 10.2041 [3+] 4.08163 [4+] 0 [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.