Advisory Published

USN-4132-1: Expat vulnerability

First published: Thu Sep 12 2019(Updated: )

It was discovered that Expat incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libexpat1<2.2.6-1ubuntu0.19.5
2.2.6-1ubuntu0.19.5
=19.04
All of
ubuntu/libexpat1<2.2.5-3ubuntu0.2
2.2.5-3ubuntu0.2
=18.04
All of
ubuntu/lib64expat1<2.1.0-7ubuntu0.16.04.5
2.1.0-7ubuntu0.16.04.5
=16.04
All of
ubuntu/libexpat1<2.1.0-7ubuntu0.16.04.5
2.1.0-7ubuntu0.16.04.5
=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for the Expat vulnerability?

    The vulnerability ID for the Expat vulnerability is USN-4132-1.

  • What software is affected by the Expat vulnerability?

    The Expat vulnerability affects the libexpat1 package version 2.2.6-1ubuntu0.19.5 on Ubuntu 19.04, libexpat1 package version 2.2.5-3ubuntu0.2 on Ubuntu 18.04, lib64expat1 package version 2.1.0-7ubuntu0.16.04.5 on Ubuntu 16.04.

  • What is the risk associated with the Expat vulnerability?

    The Expat vulnerability could allow an attacker to expose sensitive information.

  • How can I fix the Expat vulnerability?

    To fix the Expat vulnerability, update the libexpat1 package to version 2.2.6-1ubuntu0.19.5 for Ubuntu 19.04, version 2.2.5-3ubuntu0.2 for Ubuntu 18.04, and update the lib64expat1 package to version 2.1.0-7ubuntu0.16.04.5 for Ubuntu 16.04.

  • Where can I find more information about the Expat vulnerability?

    You can find more information about the Expat vulnerability at the following references: [CVE-2019-15903](https://ubuntu.com/security/CVE-2019-15903), [USN-4202-1](https://ubuntu.com/security/notices/USN-4202-1), [USN-4335-1](https://ubuntu.com/security/notices/USN-4335-1).

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