CVE-2021-3404

NameCVE-2021-3404
DescriptionIn ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs982596

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libytnef (PTS)jessie, jessie (lts)1.5-6+deb8u1vulnerable
stretch1.9.2-2vulnerable
buster1.9.3-1vulnerable
bullseye1.9.3-3fixed
bookworm2.0-1fixed
sid, trixie2.1.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libytnefsourcejessie(unfixed)end-of-life
libytnefsource(unstable)1.9.3-3982596

Notes

[buster] - libytnef <no-dsa> (Minor issue)
[stretch] - libytnef <no-dsa> (Minor issue)
https://github.com/Yeraze/ytnef/issues/86
https://github.com/Yeraze/ytnef/pull/88
https://github.com/Yeraze/ytnef/commit/f9ff4a203b8c155d51a208cadadb62f224fba715

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