Description
Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern string containing a {} sequence, as seen in (1) g_opendir, (2) g_lstat, (3) g_stat, and (4) the glob0 buffer as used in the glob functions glob2 and glob3.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 3
- FreeBSD 4.2-stable - FTPd 'glob()' Remote Buffer Overflow EDB-20732 · remote · Apr 16, 2001 · verified
- OpenBSD 2.x < 2.8 FTPd - 'glob()' Remote Buffer Overflow EDB-20733 · remote · Apr 16, 2001 · verified
- FreeBSD 2.2-4.2 / NetBSD 1.2-4.5 / OpenBSD 2.x - FTPd 'glob()' Remote Buffer Overflow EDB-20731 · remote · Apr 14, 2001 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- FreeBSD-SA-01:33 vendor-advisory
- 2548 vdb-entry
- 20010409 Globbing Vulnerabilities in Multiple FTP Daemons vendor-advisory
- CA-2001-07 third-party-advisory
- ftp-glob-expansion(6332) vdb-entry