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CVE-2021-21343

Published: 23 March 2021

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in the deletion of a file on the local host. 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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
libxstream-java
Launchpad, Ubuntu, Debian
bionic
Released (1.4.11.1-1~18.04.2)
focal
Released (1.4.11.1-1ubuntu0.2)
groovy
Released (1.4.11.1-2ubuntu0.1)
hirsute
Released (1.4.15-1ubuntu0.1)
impish
Released (1.4.15-2)
jammy
Released (1.4.15-2)
precise Does not exist

trusty Needs triage

upstream
Released (1.4.16)
xenial Ignored
(end of standard support, was needs-triage)