CVE-2021-21341

Public Exploit
XStream can cause a Denial of Service

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.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 26.09% Top 5%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory oracle.com
Affected: x-stream xstream
Published at:
Updated at:

References

Link Tags
https://x-stream.github.io/security.html#workaround mitigation third party advisory
http://x-stream.github.io/changes.html#1.4.16 release notes third party advisory
https://github.com/x-stream/xstream/security/advisories/GHSA-2p3x-qw9c-25hh third party advisory
https://x-stream.github.io/CVE-2021-21341.html exploit third party advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html mailing list third party advisory
https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E issue tracking mailing list third party advisory
https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E issue tracking mailing list third party advisory
https://security.netapp.com/advisory/ntap-20210430-0002/ third party advisory
https://www.oracle.com//security-alerts/cpujul2021.html third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/ mailing list third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ mailing list third party advisory vendor advisory
https://www.oracle.com/security-alerts/cpuoct2021.html third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/ mailing list third party advisory vendor advisory
https://www.debian.org/security/2021/dsa-5004 mailing list third party advisory vendor advisory
https://www.oracle.com/security-alerts/cpujan2022.html patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21341?
CVE-2021-21341 has been scored as a high severity vulnerability.
How to fix CVE-2021-21341?
To fix CVE-2021-21341, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21341 being actively exploited in the wild?
It is possible that CVE-2021-21341 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~26% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21341?
CVE-2021-21341 affects x-stream xstream.
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