Rapid7 Vulnerability & Exploit Database

Ubuntu: USN-4943-1 (CVE-2021-21341): XStream vulnerabilities

Back to Search

Ubuntu: USN-4943-1 (CVE-2021-21341): XStream vulnerabilities

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
03/23/2021
Created
05/14/2021
Added
05/12/2021
Modified
08/02/2022

Description

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service 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.

Solution(s)

  • ubuntu-upgrade-libxstream-java

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;