CVE-2023-6205

NameCVE-2023-6205
DescriptionIt was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3661-1, DLA-3674-1, DSA-5561-1, DSA-5566-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid125.0.1-2fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1vulnerable
buster (security)115.10.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.10.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.10.0esr-1~deb12u1fixed
trixie115.8.0esr-1fixed
sid115.10.0esr-1fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1vulnerable
buster (security)1:115.9.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.9.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.9.0-1~deb12u1fixed
sid1:115.9.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)120.0-1
firefox-esrsourcebuster115.5.0esr-1~deb10u1DLA-3661-1
firefox-esrsourcebullseye115.5.0esr-1~deb11u1DSA-5561-1
firefox-esrsourcebookworm115.5.0esr-1~deb12u1DSA-5561-1
firefox-esrsource(unstable)115.5.0esr-1
thunderbirdsourcebuster1:115.5.0-1~deb10u1DLA-3674-1
thunderbirdsourcebullseye1:115.5.0-1~deb11u1DSA-5566-1
thunderbirdsourcebookworm1:115.5.0-1~deb12u1DSA-5566-1
thunderbirdsource(unstable)1:115.5.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2023-49/#CVE-2023-6205
https://www.mozilla.org/en-US/security/advisories/mfsa2023-50/#CVE-2023-6205
https://www.mozilla.org/en-US/security/advisories/mfsa2023-52/#CVE-2023-6205

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