CVE-2020-6800

NameCVE-2020-6800
DescriptionMozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2102-1, DLA-2104-1, DSA-4620-1, DSA-4625-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid126.0-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2fixed
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1fixed
buster91.12.0esr-1~deb10u1fixed
buster (security)115.11.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.11.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.11.0esr-1~deb12u1fixed
sid, trixie115.11.0esr-1fixed
thunderbird (PTS)jessie, jessie (lts)1:68.9.0-1~deb8u2fixed
stretch (security), stretch (lts), stretch1:91.10.0-1~deb9u1fixed
buster1:91.12.0-1~deb10u1fixed
buster (security)1:115.11.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.11.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.11.0-1~deb12u1fixed
sid, trixie1:115.11.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)73.0-1
firefox-esrsourcewheezy(unfixed)end-of-life
firefox-esrsourcejessie68.5.0esr-1~deb8u1DLA-2102-1
firefox-esrsourcestretch68.5.0esr-1~deb9u1DSA-4620-1
firefox-esrsourcebuster68.5.0esr-1~deb10u1DSA-4620-1
firefox-esrsource(unstable)68.5.0esr-1
thunderbirdsourcewheezy(unfixed)end-of-life
thunderbirdsourcejessie1:68.5.0-1~deb8u1DLA-2104-1
thunderbirdsourcestretch1:68.5.0-1~deb9u1DSA-4625-1
thunderbirdsourcebuster1:68.5.0-1~deb10u1DSA-4625-1
thunderbirdsource(unstable)1:68.5.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-05/#CVE-2020-6800
https://www.mozilla.org/en-US/security/advisories/mfsa2020-06/#CVE-2020-6800
https://www.mozilla.org/en-US/security/advisories/mfsa2020-07/#CVE-2020-6800

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