Fetchmail 5.0.8 through 6.3.21, when using NTLM authentication in debug mode, allows remote NTLM servers to (1) cause a denial of service (crash and delayed delivery of inbound mail) via a crafted NTLM response that triggers an out-of-bounds read in the base64 decoder, or (2) obtain sensitive information from memory via an NTLM Type 2 message with a crafted Target Name structure, which triggers an out-of-bounds read.
CVSS Details
- CVSS 3.1 Base Score: 6.5
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade fetchmail | Aug 30, 2017 | Dec 21, 2012 |
| Debian | — | Upgrade fetchmail | Jul 30, 2024 | Dec 21, 2012 |
| Freebsd | — | Upgrade fetchmail | Dec 10, 2025 | Aug 14, 2012 |
| Oracle Solaris | — | Upgrade mail/fetchmail to version 6.3.22-0.175.1.1.0.1.0 on Solaris 11.1Upgrade mail/fetchmail to version 6.3.22-0.175.0.12.0.3.0 on Solaris 11.0 | May 29, 2017 | Dec 21, 2012 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Aug 13, 2012 |
| Suse | — | Upgrade fetchmailconfUpgrade fetchmail | Apr 26, 2018 | Jun 28, 2013 |
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