CVE-2020-6807

NameCVE-2020-6807
DescriptionWhen a device was changed while a stream was about to be destroyed, the <code>stream-reinit</code> task may have been executed after the stream was destroyed, causing a use-after-free 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)sid81.0-1fixed
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1fixed
stretch (security)68.12.0esr-1~deb9u1fixed
buster68.10.0esr-1~deb10u1fixed
buster (security)68.12.0esr-1~deb10u1fixed
bullseye68.11.0esr-1fixed
sid78.3.0esr-2fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1fixed
stretch (security)1:68.12.0-1~deb9u2fixed
buster1:68.10.0-1~deb10u1fixed
buster (security)1:68.12.0-1~deb10u1fixed
bullseye, sid1:68.12.0-1fixed

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

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

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-10/#CVE-2020-6807
https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/#CVE-2020-6807
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6807

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