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XML External Entity (XXE) Injection Affecting expat package, versions <2.2.5-3ubuntu0.1

low

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 60.91% (98th percentile)
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NVD
7.5 high
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SUSE
5.3 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-UBUNTU1804-EXPAT-451031
  • published 24 Jun 2019
  • disclosed 24 Jun 2019
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Introduced: 24 Jun 2019

CVE-2018-20843 Open this link in a new tab
CWE-611 Open this link in a new tab

How to fix?

Upgrade Ubuntu:18.04 expat to version 2.2.5-3ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).