CVE-2020-15669

NameCVE-2020-15669
DescriptionWhen aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
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-2346-1, DLA-2360-1, DSA-4749-1, DSA-4754-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1vulnerable
stretch (security)78.15.0esr-1~deb9u1fixed
buster78.14.0esr-1~deb10u1fixed
buster (security)78.15.0esr-1~deb10u1fixed
bullseye78.14.0esr-1~deb11u1fixed
bullseye (security)78.15.0esr-1~deb11u1fixed
bookworm78.14.0esr-1fixed
sid91.2.0esr-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1vulnerable
stretch (security)1:78.14.0-1~deb9u1fixed
buster, buster (security)1:78.14.0-1~deb10u1fixed
bullseye (security), bullseye1:78.14.0-1~deb11u1fixed
bookworm1:78.14.0-1fixed
sid1:91.2.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefox-esrsourcestretch68.12.0esr-1~deb9u1DLA-2346-1
firefox-esrsourcebuster68.12.0esr-1~deb10u1DSA-4749-1
firefox-esrsource(unstable)68.12.0esr-1
thunderbirdsourcestretch1:68.12.0-1~deb9u1DLA-2360-1
thunderbirdsourcebuster1:68.12.0-1~deb10u1DSA-4754-1
thunderbirdsource(unstable)1:68.12.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-37/#CVE-2020-15669
https://www.mozilla.org/en-US/security/advisories/mfsa2020-40/#CVE-2020-15669

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