CVE-2024-7524

NameCVE-2024-7524
DescriptionFirefox adds web-compatibility shims in place of some tracking scripts blocked by Enhanced Tracking Protection. On a site protected by Content Security Policy in "strict-dynamic" mode, an attacker able to inject an HTML element could have used a DOM Clobbering attack on some of the shims and achieved XSS, bypassing the CSP strict-dynamic protection. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5740-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid133.0.3-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2vulnerable
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1vulnerable
buster (security), buster, buster (lts)115.12.0esr-1~deb10u1vulnerable
bullseye115.14.0esr-1~deb11u1fixed
bullseye (security)128.5.0esr-1~deb11u1fixed
bookworm128.3.1esr-1~deb12u1fixed
bookworm (security)128.5.0esr-1~deb12u1fixed
trixie128.5.0esr-1fixed
sid128.5.1esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)129.0-1
firefox-esrsourcejessie(unfixed)end-of-life
firefox-esrsourcestretch(unfixed)end-of-life
firefox-esrsourcebuster(unfixed)end-of-life
firefox-esrsourcebullseye115.14.0esr-1~deb11u1DSA-5740-1
firefox-esrsourcebookworm115.14.0esr-1~deb12u1DSA-5740-1
firefox-esrsource(unstable)115.14.0esr-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2024-33/#CVE-2024-7524
https://www.mozilla.org/en-US/security/advisories/mfsa2024-34/#CVE-2024-7524

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