CVE-2020-6806

NameCVE-2020-6806
DescriptionBy carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. 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 severitymedium

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-2020-6806
https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/#CVE-2020-6806
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6806

Search for package or bug name: Reporting problems