CVE-2016-3705

Name	CVE-2016-3705
Description	The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
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-503-1, DSA-3593-1
Debian Bugs	823414

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libxml2 (PTS)	buster	2.9.4+dfsg1-7+deb10u4	fixed
	buster (security)	2.9.4+dfsg1-7+deb10u6	fixed
	bullseye (security), bullseye	2.9.10+dfsg-6.7+deb11u4	fixed
	bookworm	2.9.14+dfsg-1.3~deb12u1	fixed
	sid, trixie	2.9.14+dfsg-1.3	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libxml2	source	wheezy	2.8.0+dfsg1-7+wheezy6	DLA-503-1
libxml2	source	jessie	2.9.1+dfsg1-5+deb8u2	DSA-3593-1
libxml2	source	(unstable)	2.9.3+dfsg1-1.1		823414

https://gitlab.gnome.org/GNOME/libxml2/-/commit/8f30bdff69edac9075f4663ce3b56b0c52d48ce6 (v2.9.4)
https://bugzilla.gnome.org/show_bug.cgi?id=765207