Description
chpass in OpenBSD 2.0 through 3.2 allows local users to read portions of arbitrary files via a hard link attack on a temporary file used to store user database information.
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 1
- OpenBSD 2.x/3.x - CHPass Temporary File Link File Content Revealing EDB-22210 · local · Feb 3, 2003 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 1006035 vdb-entry
- 20030203 ASA-0001: OpenBSD chpass/chfn/chsh file content leak mailing-list
- openbsd-chpass-information-disclosure(11233) vdb-entry
- 3238 third-party-advisory
- 6748 vdb-entry
- http://www.epita.fr/~bevand_m/asa/asa-0001