2021-39150 | XStream Java Runtime deserialization
|CVSS Meta Temp Score
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|CTI Interest Score
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A vulnerability was found in XStream up to 1.4.17. It has been classified as critical. Affected is an unknown part of the component Java Runtime. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-502. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. 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](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.
The weakness was presented 08/24/2021. The advisory is available at github.com. This vulnerability is traded as CVE-2021-39150 since 08/16/2021. The exploitability is told to be difficult. It is possible to launch the attack remotely. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not available.
Upgrading to version 1.4.18 eliminates this vulnerability.
VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8
Status: Not defined
0-Day Time: 🔒
Upgrade: XStream 1.4.18
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