CVE-2020-12398

NameCVE-2020-12398
DescriptionIf Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. This vulnerability affects Thunderbird < 68.9.0.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2247-1, DSA-4702-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
thunderbird (PTS)jessie, jessie (lts)1:68.9.0-1~deb8u2fixed
stretch (security), stretch (lts), stretch1:91.10.0-1~deb9u1fixed
buster (security), buster, buster (lts)1:115.12.0-1~deb10u1fixed
bullseye1:115.12.0-1~deb11u1fixed
bullseye (security)1:128.4.0esr-1~deb11u1fixed
bookworm1:115.12.0-1~deb12u1fixed
bookworm (security)1:115.16.0esr-1~deb12u1fixed
trixie1:128.3.2esr-1fixed
sid1:128.4.0esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
thunderbirdsourcewheezy(unfixed)end-of-life
thunderbirdsourcejessie1:68.9.0-1~deb8u2DLA-2247-1
thunderbirdsourcestretch1:68.9.0-1~deb9u1DSA-4702-1
thunderbirdsourcebuster1:68.9.0-1~deb10u1DSA-4702-1
thunderbirdsource(unstable)1:68.9.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12398

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