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 code/issues, web search, more)
ReferencesDLA-2205-1, DLA-2206-1, DSA-4678-1, DSA-4683-1
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
chromium (PTS)stretch (security)73.0.3683.75-1~deb9u1vulnerable
buster, buster (security)80.0.3987.162-1~deb10u1vulnerable
bullseye, sid81.0.4044.92-1vulnerable
firefox (PTS)sid77.0-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)68.8.0esr-1~deb8u1fixed
stretch68.4.1esr-1~deb9u1vulnerable
stretch (security)68.9.0esr-1~deb9u1fixed
buster68.7.0esr-1~deb10u1vulnerable
buster (security)68.9.0esr-1~deb10u1fixed
bullseye68.8.0esr-1fixed
sid68.9.0esr-1fixed
thunderbird (PTS)jessie1:52.8.0-1~deb8u1vulnerable
jessie (security)1:68.8.0-1~deb8u1fixed
stretch1:68.4.1-1~deb9u1vulnerable
stretch (security)1:68.8.0-1~deb9u1fixed
buster1:68.7.0-1~deb10u1vulnerable
buster (security)1:68.8.0-1~deb10u1fixed
bullseye1:68.8.1-1fixed
sid1:68.9.0-1fixed

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

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

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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