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)
ReferencesDLA-1997-1, DSA-4571-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
thunderbird (PTS)stretch1:68.10.0-1~deb9u1fixed
stretch (security)1:78.4.0-1~deb9u1fixed
buster1:68.12.0-1~deb10u1fixed
buster (security)1:78.4.0-1~deb10u1fixed
bullseye1:68.12.0-1fixed
sid1:78.4.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
thunderbirdsourceexperimental1:68.1.1-1~exp1
thunderbirdsourcejessie1:68.2.2-1~deb8u1DLA-1997-1
thunderbirdsourcestretch1:68.2.2-1~deb9u1DSA-4571-1
thunderbirdsourcebuster1:68.2.2-1~deb10u1DSA-4571-1
thunderbirdsource(unstable)1:68.2.1-1

Notes

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

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