CVE-2021-39152
high-risk
Published 2021-08-23
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.
Do I need to act?
!
61.8% chance of exploitation in next 30 days
EPSS score — higher than 38% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.5/10
High
NETWORK
/ HIGH complexity
Affected Products (20)
Affected Vendors
References (22)
Third Party Advisory
https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210923-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-5004
Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html
Third Party Advisory
https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210923-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-5004
and 2 more references
67
/ 100
high-risk
Severity
25/34 · High
Exploitability
19/34 · Moderate
Exposure
23/34 · High