CVE-2024-7524

Name	CVE-2024-7524
Description	Firefox 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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5740-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
firefox (PTS)	sid	131.0-1	fixed
firefox-esr (PTS)	bullseye	115.14.0esr-1~deb11u1	fixed
	bullseye (security)	115.15.0esr-1~deb11u1	fixed
	bookworm	115.14.0esr-1~deb12u1	fixed
	bookworm (security)	115.15.0esr-1~deb12u1	fixed
	trixie	115.15.0esr-1	fixed
	sid	128.3.0esr-1	fixed

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

Package	Type	Release	Fixed Version	Origin
firefox	source	(unstable)	129.0-1
firefox-esr	source	bullseye	115.14.0esr-1~deb11u1	DSA-5740-1
firefox-esr	source	bookworm	115.14.0esr-1~deb12u1	DSA-5740-1
firefox-esr	source	(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