CVE-2020-6073

NameCVE-2020-6073
DescriptionAn exploitable denial-of-service vulnerability exists in the TXT record-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing the RDATA section in a TXT record in mDNS messages, multiple integer overflows can be triggered, leading to a denial of service. An attacker can send an mDNS message to trigger this vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4671-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
vlc (PTS)buster3.0.17.4-0+deb10u1fixed
buster (security)3.0.20-0+deb10u1fixed
bullseye (security), bullseye3.0.20-0+deb11u1fixed
bookworm, bookworm (security)3.0.20-0+deb12u1fixed
trixie3.0.20-1fixed
sid3.0.20-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libmicrodnssource(unstable)(unfixed)
vlcsourcejessie(unfixed)end-of-life
vlcsourcestretch3.0.10-0+deb9u1DSA-4671-1
vlcsourcebuster3.0.10-0+deb10u1DSA-4671-1
vlcsource(unstable)3.0.8-4

Notes

[jessie] - vlc <end-of-life> (Not supported in jessie LTS)
https://talosintelligence.com/vulnerability_reports/TALOS-2020-0996
These were addressed on the source level in 3.0.9, but 3.0.8-4 disables the plugin

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