CVE-2021-21347

Publication date 23 March 2021

Last updated 22 August 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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 load and execute arbitrary code from a remote 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.

Status

Package Ubuntu Release Status
libxstream-java 24.10 oracular
Fixed 1.4.15-2
24.04 LTS noble
Fixed 1.4.15-2
23.10 mantic
Fixed 1.4.15-2
23.04 lunar
Fixed 1.4.15-2
22.10 kinetic
Fixed 1.4.15-2
22.04 LTS jammy
Fixed 1.4.15-2
21.10 impish
Fixed 1.4.15-2
21.04 hirsute
Fixed 1.4.15-1ubuntu0.1
20.10 groovy
Fixed 1.4.11.1-2ubuntu0.1
20.04 LTS focal
Fixed 1.4.11.1-1ubuntu0.2
18.04 LTS bionic
Fixed 1.4.11.1-1~18.04.2
16.04 LTS xenial
14.04 LTS trusty

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Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H