Description
Fetchmail (aka fetchmail-ssl) before 5.8.17 allows a remote malicious (1) IMAP server or (2) POP/POP3 server to overwrite arbitrary memory and possibly gain privileges via a negative index number as part of a response to a LIST request.
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
- Fetchmail 5.x - POP3 Reply Signed Integer Index EDB-21064 · remote · Aug 9, 2001 · verified
- Fetchmail 5.x - IMAP Reply Signed Integer Index EDB-21066 · remote · Aug 9, 2001 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- SuSE-SA:2001:026 vendor-advisory
- DSA-071 vendor-advisory
- RHSA-2001:103 vendor-advisory
- 3166 vdb-entry
- 20010809 Fetchmail security advisory mailing-list
- CLA-2001:419 vendor-advisory
- MDKSA-2001:072 vendor-advisory
- ESA-20010816-01 vendor-advisory
- 3164 vdb-entry
- fetchmail-signed-integer-index(6965) vdb-entry