CVE-2021-21344
high-risk
Published 2021-03-23
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 load and execute arbitrary code from a remote host 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.
Do I need to act?
!
30.6% chance of exploitation in next 30 days
EPSS score — higher than 69% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10
Medium
NETWORK
/ HIGH complexity
Affected Products (20)
References (30)
Release Notes
http://x-stream.github.io/changes.html#1.4.16
Third Party Advisory
https://github.com/x-stream/xstream/security/advisories/GHSA-59jw-jqf4-3wq3
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210430-0002/
Mailing List
https://www.debian.org/security/2021/dsa-5004
Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html
Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html
Release Notes
http://x-stream.github.io/changes.html#1.4.16
Third Party Advisory
https://github.com/x-stream/xstream/security/advisories/GHSA-59jw-jqf4-3wq3
and 10 more references
57
/ 100
high-risk
Severity
17/34 · Moderate
Exploitability
16/34 · Moderate
Exposure
24/34 · High