Description
The IMAP-over-SSL implementation in getmail 4.44.0 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IMAP servers and obtain sensitive information via a crafted certificate from a recognized Certification Authority.
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 7 | getmail4 | 4.46.0-1~deb7u1 | DSA-3091-1 |
| Debian 6.0 | getmail4 | 4.46.0-1~deb6u1 | DLA-106-1 |
Advisories 2
- DSA-3091-1 getmail4 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-106-1 getmail4 - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- openSUSE-SU-2014:1315 vendor-advisory
- [oss-security] 20141007 Re: CVE Request(s): Getmail 4 mailing-list
- DSA-3091 vendor-advisory
- 61229 third-party-advisory
- http://pyropus.ca/software/getmail/CHANGELOG