DescriptionAn issue was discovered in the POP3 component of Courier Mail Server before 1.1.5. Meddler-in-the-middle attackers can pipeline commands after the POP3 STLS command, injecting plaintext commands into an encrypted user session.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs989375

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
courier (PTS)buster1.0.6-1vulnerable
bookworm, bullseye1.0.16-3vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - courier <no-dsa> (Minor issue)
[bullseye] - courier <no-dsa> (Minor issue)
[buster] - courier <no-dsa> (Minor issue)
[stretch] - courier <postponed> (Minor issue, include in next update) (1.1.5)

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