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 request data from internal resources that are not publicly available 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.
CVE-2021-21349
CVSS Score: 8.6 (HIGH)
EPSS Score: 1.49%
Risk Score: 6.02 (HIGH)
Risk Score based on CVSS score and EPSS. This score is for reference purposes and is not internationally recognized.
Mitre ATT&CK Technical v15.1
T1153 – Source
T1053.002 – At
Technical Analysis & Mitigation Measures
Reference Links
http://x-stream.github.io/changes.html#1.4.16
https://x-stream.github.io/CVE-2021-21349.html
https://x-stream.github.io/security.html#workaround
https://github.com/x-stream/xstream/security/advisories/GHSA-f6hm-88×3-mfjv
https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html
https://security.netapp.com/advisory/ntap-20210430-0002/
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.debian.org/security/2021/dsa-5004
https://www.oracle.com/security-alerts/cpujan2022.html
https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E
https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/
Vendor - Produce - Version
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