CVE-2021-29970

NameCVE-2021-29970
DescriptionA malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2709-1, DLA-2711-1, DSA-4939-1, DSA-4940-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid131.0-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2vulnerable
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1fixed
buster (security), buster, buster (lts)115.12.0esr-1~deb10u1fixed
bullseye115.14.0esr-1~deb11u1fixed
bullseye (security)115.15.0esr-1~deb11u1fixed
bookworm115.14.0esr-1~deb12u1fixed
bookworm (security)115.15.0esr-1~deb12u1fixed
trixie115.15.0esr-1fixed
sid128.3.0esr-1fixed
thunderbird (PTS)jessie, jessie (lts)1:68.9.0-1~deb8u2vulnerable
stretch (security), stretch (lts), stretch1:91.10.0-1~deb9u1fixed
buster (security), buster, buster (lts)1:115.12.0-1~deb10u1fixed
bullseye1:115.12.0-1~deb11u1fixed
bullseye (security)1:115.15.0-1~deb11u1fixed
bookworm1:115.12.0-1~deb12u1fixed
bookworm (security)1:115.15.0-1~deb12u1fixed
trixie1:128.2.0esr-1fixed
sid1:128.2.3esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)90.0-1
firefox-esrsourcejessie(unfixed)end-of-life
firefox-esrsourcestretch78.12.0esr-1~deb9u1DLA-2709-1
firefox-esrsourcebuster78.12.0esr-1~deb10u1DSA-4939-1
firefox-esrsource(unstable)78.12.0esr-1
thunderbirdsourcejessie(unfixed)end-of-life
thunderbirdsourcestretch1:78.12.0-1~deb9u1DLA-2711-1
thunderbirdsourcebuster1:78.12.0-1~deb10u1DSA-4940-1
thunderbirdsource(unstable)1:78.12.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2021-28/#CVE-2021-29970
https://www.mozilla.org/en-US/security/advisories/mfsa2021-29/#CVE-2021-29970
https://www.mozilla.org/en-US/security/advisories/mfsa2021-30/#CVE-2021-29970

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