CVEs-PoC/2021/CVE-2021-21348.md

CVE-2021-21348

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 occupy a thread that consumes maximum CPU time and will never return. 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.

POC

Reference

• https://www.oracle.com//security-alerts/cpujul2021.html
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://www.oracle.com/security-alerts/cpuoct2021.html

Github

• https://github.com/Whoopsunix/PPPVULNS
• https://github.com/rootameen/vulpine
• https://github.com/x-poc/xstream-poc