CVE-2023-3550

Name	CVE-2023-3550
Description	Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.
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-3671-1, DSA-5520-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	bullseye	1:1.35.13-1+deb11u2	fixed
	bullseye (security)	1:1.35.13-1+deb11u3	fixed
	bookworm, bookworm (security)	1:1.39.10-1~deb12u1	fixed
	sid	1:1.39.10-1	fixed

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

Package	Type	Release	Fixed Version	Origin
mediawiki	source	buster	1:1.31.16-1+deb10u7	DLA-3671-1
mediawiki	source	bullseye	1:1.35.13-1~deb11u1	DSA-5520-1
mediawiki	source	bookworm	1:1.39.5-1~deb12u1	DSA-5520-1
mediawiki	source	(unstable)	1:1.39.5-1

https://phabricator.wikimedia.org/T341565