CVE-2023-6858

NameCVE-2023-6858
DescriptionFirefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3697-1, DLA-3698-1, DSA-5581-1, DSA-5582-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid126.0-1fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1vulnerable
buster (security)115.11.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.11.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.11.0esr-1~deb12u1fixed
sid, trixie115.11.0esr-1fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1vulnerable
buster (security)1:115.11.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.11.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.11.0-1~deb12u1fixed
trixie1:115.10.1-1fixed
sid1:115.11.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)121.0-1
firefox-esrsourcebuster115.6.0esr-1~deb10u1DLA-3697-1
firefox-esrsourcebullseye115.6.0esr-1~deb11u1DSA-5581-1
firefox-esrsourcebookworm115.6.0esr-1~deb12u1DSA-5581-1
firefox-esrsource(unstable)115.6.0esr-1
thunderbirdsourcebuster1:115.6.0-1~deb10u1DLA-3698-1
thunderbirdsourcebullseye1:115.6.0-1~deb11u1DSA-5582-1
thunderbirdsourcebookworm1:115.6.0-1~deb12u1DSA-5582-1
thunderbirdsource(unstable)1:115.6.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2023-56/#CVE-2023-6858
https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-6858
https://www.mozilla.org/en-US/security/advisories/mfsa2023-54/#CVE-2023-6858

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