What’s Vulnerable › Vulnerabilities

CVE-2021-39140: XStream can cause a Denial of Service

Description

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

Affected products

How to fix

Upgrade to a fixed version: x-stream xstream 1.4.18. Check the vendor advisory for mitigations.

References

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