Loop with Unreachable Exit Condition ('Infinite Loop') Affecting xstream package, versions <0:1.3.1-16.el7_9


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
1.77% (89th percentile)

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  • Snyk IDSNYK-CENTOS7-XSTREAM-2187296
  • published29 Aug 2021
  • disclosed22 Aug 2021

Introduced: 22 Aug 2021

CVE-2021-39140  (opens in a new tab)
CWE-835  (opens in a new tab)
CWE-502  (opens in a new tab)

How to fix?

Upgrade Centos:7 xstream to version 0:1.3.1-16.el7_9 or higher.

NVD Description

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

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

CVSS Scores

version 3.1