CVE-2022-40956

Name	CVE-2022-40956
Description	When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3121-1, DLA-3123-1, DSA-5237-1, DSA-5238-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
firefox (PTS)	sid	133.0.3-1	fixed
firefox-esr (PTS)	bullseye	115.14.0esr-1~deb11u1	fixed
	bullseye (security)	128.5.0esr-1~deb11u1	fixed
	bookworm	128.3.1esr-1~deb12u1	fixed
	bookworm (security)	128.5.0esr-1~deb12u1	fixed
	trixie	128.5.0esr-1	fixed
	sid	128.5.1esr-1	fixed
thunderbird (PTS)	bullseye	1:115.12.0-1~deb11u1	fixed
	bullseye (security)	1:128.5.0esr-1~deb11u1	fixed
	bookworm	1:115.16.0esr-1~deb12u1	fixed
	bookworm (security)	1:128.5.0esr-1~deb12u1	fixed
	sid, trixie	1:128.5.2esr-1	fixed

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

Package	Type	Release	Fixed Version	Origin
firefox	source	(unstable)	105.0-1
firefox-esr	source	buster	102.3.0esr-1~deb10u2	DLA-3121-1
firefox-esr	source	bullseye	102.3.0esr-1~deb11u1	DSA-5237-1
firefox-esr	source	(unstable)	102.3.0esr-1
thunderbird	source	buster	1:102.3.0-1~deb10u1	DLA-3123-1
thunderbird	source	bullseye	1:102.3.0-1~deb11u1	DSA-5238-1
thunderbird	source	(unstable)	1:102.3.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/#CVE-2022-40956
https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40956
https://www.mozilla.org/en-US/security/advisories/mfsa2022-42/#CVE-2022-40956