Deserialization of Untrusted Data Affecting xstream-javadoc package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.35% (86th percentile)

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  • Snyk IDSNYK-RHEL7-XSTREAMJAVADOC-1405043
  • published26 Jul 2021
  • disclosed12 Mar 2021

Introduced: 12 Mar 2021

CVE-2021-21342  (opens in a new tab)
CWE-502  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 xstream-javadoc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xstream-javadoc package and not the xstream-javadoc package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. 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.

References

CVSS Scores

version 3.1