CVE-2019-11755

NameCVE-2019-11755
DescriptionA crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer multipart/signed layer. This vulnerability affects Thunderbird < 68.1.1.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
thunderbird (PTS)jessie1:52.8.0-1~deb8u1vulnerable
jessie (security)1:60.9.0-1~deb8u1vulnerable
stretch1:60.8.0-1~deb9u1vulnerable
stretch (security)1:60.9.0-1~deb9u1vulnerable
buster1:60.8.0-1~deb10u1vulnerable
buster (security)1:60.9.0-1~deb10u1vulnerable
bullseye, sid1:60.9.0-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
thunderbirdsource(unstable)(unfixed)medium
thunderbirdsourceexperimental1:68.1.1-1~exp1medium

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2019-32/#CVE-2019-11755

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