CVE-2020-6831

NameCVE-2020-6831
DescriptionA buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2205-1, DLA-2206-1, DSA-4678-1, DSA-4683-1, DSA-4714-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
chromium (PTS)buster, buster (security)90.0.4430.212-1~deb10u1fixed
bullseye104.0.5112.79-1~deb11u1fixed
bullseye (security)105.0.5195.125-1~deb11u1fixed
bookworm, sid105.0.5195.125-1fixed
firefox (PTS)sid105.0-1fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1fixed
buster (security)102.3.0esr-1~deb10u1fixed
bullseye91.13.0esr-1~deb11u1fixed
bullseye (security)102.3.0esr-1~deb11u1fixed
bookworm102.2.0esr-1fixed
sid102.3.0esr-1fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1fixed
buster (security)1:91.13.0-1~deb10u1fixed
bullseye (security), bullseye1:91.13.0-1~deb11u1fixed
bookworm1:102.2.2-1fixed
sid1:102.3.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
chromiumsourcestretch(unfixed)end-of-life
chromiumsourcebuster83.0.4103.116-1~deb10u1DSA-4714-1
chromiumsource(unstable)83.0.4103.83-1
firefoxsource(unstable)76.0-1
firefox-esrsourcejessie68.8.0esr-1~deb8u1DLA-2205-1
firefox-esrsourcestretch68.8.0esr-1~deb9u1DSA-4678-1
firefox-esrsourcebuster68.8.0esr-1~deb10u1DSA-4678-1
firefox-esrsource(unstable)68.8.0esr-1
thunderbirdsourcejessie1:68.8.0-1~deb8u1DLA-2206-1
thunderbirdsourcestretch1:68.8.0-1~deb9u1DSA-4683-1
thunderbirdsourcebuster1:68.8.0-1~deb10u1DSA-4683-1
thunderbirdsource(unstable)1:68.8.0-1

Notes

[stretch] - chromium <end-of-life> (see DSA 4562)
https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-6831
https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-6831
https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-6831

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