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CVE-2021-21345

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 which may allow a remote attacker who has sufficient rights to execute commands of the host 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.

Priority

Medium

Cvss 3 Severity Score

9.9

Score breakdown

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)
kinetic
Released (1.4.15-2)
lunar
Released (1.4.15-2)
trusty Needed

upstream
Released (1.4.16)
xenial Needed

Severity score breakdown

Parameter Value
Base score 9.9
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H