CVE-2020-6814

NameCVE-2020-6814
DescriptionMozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. 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. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
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-2140-1, DLA-2150-1, DSA-4639-1, DSA-4642-1
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid74.0-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)68.6.0esr-1~deb8u1fixed
stretch68.4.1esr-1~deb9u1vulnerable
stretch (security)68.6.0esr-1~deb9u1fixed
buster68.4.1esr-1~deb10u1vulnerable
buster (security)68.6.0esr-1~deb10u1fixed
bullseye, sid68.6.0esr-1fixed
thunderbird (PTS)jessie1:52.8.0-1~deb8u1vulnerable
jessie (security)1:68.6.0-1~deb8u1fixed
stretch1:68.4.1-1~deb9u1vulnerable
stretch (security)1:68.6.0-1~deb9u1fixed
buster1:68.4.1-1~deb10u1vulnerable
buster (security)1:68.6.0-1~deb10u1fixed
bullseye1:68.5.0-1vulnerable
sid1:68.6.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)74.0-1
firefox-esrsource(unstable)68.6.0esr-1
firefox-esrsourcebuster68.6.0esr-1~deb10u1DSA-4639-1
firefox-esrsourcejessie68.6.0esr-1~deb8u1DLA-2140-1
firefox-esrsourcestretch68.6.0esr-1~deb9u1DSA-4639-1
thunderbirdsource(unstable)1:68.6.0-1
thunderbirdsourcebuster1:68.6.0-1~deb10u1DSA-4642-1
thunderbirdsourcejessie1:68.6.0-1~deb8u1DLA-2150-1
thunderbirdsourcestretch1:68.6.0-1~deb9u1DSA-4642-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-10/#CVE-2020-6814
https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/#CVE-2020-6814
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6814

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