CVE-2021-29964

NameCVE-2021-29964
DescriptionA locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid92.0-1fixed
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1fixed
stretch (security)78.14.0esr-1~deb9u1fixed
buster78.11.0esr-1~deb10u1fixed
buster (security)78.14.0esr-1~deb10u1fixed
bullseye78.12.0esr-1fixed
bullseye (security)78.14.0esr-1~deb11u1fixed
bookworm, sid78.14.0esr-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1fixed
stretch (security)1:78.14.0-1~deb9u1fixed
buster1:78.6.0-1~deb10u1fixed
buster (security)1:78.14.0-1~deb10u1fixed
bullseye1:78.12.0-1fixed
bullseye (security)1:78.14.0-1~deb11u1fixed
bookworm, sid1:78.14.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)(not affected)
firefox-esrsource(unstable)(not affected)
thunderbirdsource(unstable)(not affected)

Notes

- firefox-esr <not-affected> (Only affects Windows)
- firefox <not-affected> (Only affects Windows)
- thunderbird <not-affected> (Only affects Windows)
https://www.mozilla.org/en-US/security/advisories/mfsa2021-26/#CVE-2021-29964
https://www.mozilla.org/en-US/security/advisories/mfsa2021-24/#CVE-2021-29964
https://www.mozilla.org/en-US/security/advisories/mfsa2021-23/#CVE-2021-29964

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