Description
crontab in Vixie cron 3.0.1 and earlier does not properly drop privileges after the failed parsing of a modification operation, which could allow a local attacker to gain additional privileges when an editor is called to correct the error.
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 2
- Vixie Cron crontab 3.0 - Privilege Lowering Failure (2) EDB-20823 · local · Jul 5, 2001 · verified
- Vixie Cron crontab 3.0 - Privilege Lowering Failure (1) EDB-20822 · local · May 7, 2001 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- MDKSA-2001:050 vendor-advisory
- SuSE-SA:2001:17 vendor-advisory
- 20010507 Vixie cron vulnerability mailing-list
- DSA-054 vendor-advisory
- 2687 vdb-entry
- vixie-cron-gain-privileges(6508) vdb-entry