CVE-2021-21350

Name	CVE-2021-21350
Description	XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to execute arbitrary code only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
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-2616-1, ELA-398-1
Debian Bugs	985843

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libxstream-java (PTS)	jessie, jessie (lts)	1.4.11.1-1+deb8u6	fixed
	stretch (security)	1.4.11.1-1+deb9u5	fixed
	stretch (lts), stretch	1.4.11.1-1+deb9u6	fixed
	buster (security), buster, buster (lts)	1.4.11.1-1+deb10u4	fixed
	bullseye (security), bullseye	1.4.15-3+deb11u2	fixed
	bookworm	1.4.20-1	fixed
	sid, trixie	1.4.21-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libxstream-java	source	jessie	1.4.11.1-1+deb8u2	ELA-398-1
libxstream-java	source	stretch	1.4.11.1-1+deb9u2	DLA-2616-1
libxstream-java	source	buster	1.4.11.1-1+deb10u3
libxstream-java	source	(unstable)	1.4.15-2		985843

https://github.com/x-stream/xstream/security/advisories/GHSA-43gc-mjxg-gvrq