CVE-2023-54354

Name	CVE-2023-54354
Description	Nokogiri before 1.14.3 (CRuby implementation only, when using the packaged libxml2) bundles libxml2 v2.10.3, which is vulnerable to NULL pointer dereferences in XML Schema processing (xmlSchemaFixupComplexType, CVE-2023-28484, and xmlSchemaCheckCOSSTDerivedOK). An attacker who supplies a crafted/malformed XML schema can cause libxml2 to dereference a NULL pointer and potentially segfault, resulting in a denial of service. Nokogiri 1.14.3 upgrades the packaged libxml2 to v2.10.4 to resolve these issues.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby-nokogiri (PTS)	bullseye	1.11.1+dfsg-2	fixed
	bullseye (security)	1.11.1+dfsg-2+deb11u1	fixed
	bookworm	1.13.10+dfsg-2	fixed
	trixie	1.18.2+dfsg-1	fixed
	forky, sid	1.19.4+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ruby-nokogiri	source	(unstable)	(not affected)

- ruby-nokogiri <not-affected> (Debian uses the system copy of libxml)