Description
fetchmail before 6.3.6-rc4 does not properly enforce TLS and may transmit cleartext passwords over unsecured links if certain circumstances occur, which allows remote attackers to obtain sensitive information via man-in-the-middle (MITM) attacks.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | fetchmail | 6.3.6-1 | — |
| Debian 13 | fetchmail | 6.3.6-1 | — |
| Debian 12 | fetchmail | 6.3.6-1 | — |
| Debian 3.1 | fetchmail | 6.2.5-12sarge5 | DSA-1259-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | fetchmail | 6.2.5-6.el4.5 | RHSA-2007:0018 |
| RHEL 3 | fetchmail | 6.2.0-3.el3.3 | RHSA-2007:0018 |
| RHEL 2 | fetchmail +1 | 5.9.0-21.7.3.el2.1.4 | RHSA-2007:0018 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | fetchmail | 6.4.21-2.1 | openSUSE-SU-2024:10753-1 |
Advisories 3
- RHSA-2007:0018 Red Hat Security Advisory: fetchmail security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1259-1 fetchmail Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10753-1 fetchmail-6.4.21-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- SSA:2007-024-01 vendor-advisory
- USN-405-1 vendor-advisory
- 24966 third-party-advisory
- 31580 vdb-entry
- 23781 third-party-advisory
- 24174 third-party-advisory
- DSA-1259 vendor-advisory
- 23838 third-party-advisory
- 24151 third-party-advisory
- http://docs.info.apple.com/article.html?artnum=305391
- 23714 third-party-advisory
- 21903 vdb-entry
- 24284 third-party-advisory
- 23631 third-party-advisory
- 24007 third-party-advisory
- 23804 third-party-advisory
- 20070105 fetchmail security announcement 2006-02 (CVE-2006-5867) mailing-list
- ADV-2007-0088 vdb-entry
- SUSE-SR:2007:004 vendor-advisory
- TA07-109A third-party-advisory
- 23695 third-party-advisory
- http://fetchmail.berlios.de/fetchmail-SA-2006-02.txt
- MDKSA-2007:016 vendor-advisory
- FEDORA-2007-041 vendor-advisory
- 23923 third-party-advisory
- OpenPKG-SA-2007.004 vendor-advisory
- 2007-0007 vendor-advisory
- 20070218 Re: [SECURITY] [DSA 1259-1] New fetchmail packages fix information disclosure mailing-list
- GLSA-200701-13 vendor-advisory
- 1017478 vdb-entry
- https://issues.rpath.com/browse/RPL-919
- APPLE-SA-2007-04-19 vendor-advisory
- ADV-2007-1470 vdb-entry
- ADV-2007-0087 vdb-entry
- RHSA-2007:0018 vendor-advisory
- oval:org.mitre.oval:def:10566 vdb-entry signature