Advisory Published

USN-5288-1: Expat vulnerabilities

First published: Mon Feb 21 2022(Updated: )

It was discovered that Expat incorrectly handled certain files. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libexpat1<2.4.1-2ubuntu0.1
2.4.1-2ubuntu0.1
=21.10
All of
ubuntu/libexpat1<2.2.9-1ubuntu0.2
2.2.9-1ubuntu0.2
=20.04
All of
ubuntu/libexpat1<2.2.5-3ubuntu0.4
2.2.5-3ubuntu0.4
=18.04
All of
ubuntu/libexpat1<2.1.0-7ubuntu0.16.04.5+esm2
2.1.0-7ubuntu0.16.04.5+esm2
=16.04
All of
ubuntu/lib64expat1<2.1.0-7ubuntu0.16.04.5+esm2
2.1.0-7ubuntu0.16.04.5+esm2
=16.04
All of
ubuntu/libexpat1<2.1.0-4ubuntu1.4+esm4
2.1.0-4ubuntu1.4+esm4
=14.04
All of
ubuntu/lib64expat1<2.1.0-4ubuntu1.4+esm4
2.1.0-4ubuntu1.4+esm4
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID of this security advisory?

    USN-5288-1

  • What is the title of this security advisory?

    Expat vulnerabilities

  • What is the description of the vulnerability?

    The Expat library incorrectly handles certain files, which could allow an attacker to cause a crash or execute arbitrary code.

  • Which software is affected by this vulnerability?

    The vulnerabilities affect Ubuntu 21.10, 20.04, 18.04, 16.04, and 14.04 versions of the libexpat1 and lib64expat1 packages.

  • Where can I find more information about the vulnerabilities?

    You can find more information about the vulnerabilities in the Ubuntu security advisories: [CVE-2022-22823](https://ubuntu.com/security/CVE-2022-22823), [CVE-2021-45960](https://ubuntu.com/security/CVE-2021-45960), [CVE-2022-25235](https://ubuntu.com/security/CVE-2022-25235).

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