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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2709-1, DLA-2711-1, DSA-4939-1, DSA-4940-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid94.0.2-1fixed
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
sid91.3.0esr-2fixed
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
bookworm, sid1:91.3.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)90.0-1
firefox-esrsourcestretch78.12.0esr-1~deb9u1DLA-2709-1
firefox-esrsourcebuster78.12.0esr-1~deb10u1DSA-4939-1
firefox-esrsource(unstable)78.12.0esr-1
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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