Advisory Published

USN-3739-1: libxml2 vulnerabilities

First published: Tue Aug 14 2018(Updated: )

Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information. (CVE-2016-9318) It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2017-16932) It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-18258, CVE-2018-14404, CVE-2018-14567)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libxml2<2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.2
=18.04
All of
ubuntu/libxml2-utils<2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.2
=18.04
All of
ubuntu/python-libxml2<2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.2
=18.04
All of
ubuntu/python3-libxml2<2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.2
=18.04
All of
ubuntu/libxml2<2.9.3+dfsg1-1ubuntu0.6
2.9.3+dfsg1-1ubuntu0.6
=16.04
All of
ubuntu/libxml2-utils<2.9.3+dfsg1-1ubuntu0.6
2.9.3+dfsg1-1ubuntu0.6
=16.04
All of
ubuntu/python-libxml2<2.9.3+dfsg1-1ubuntu0.6
2.9.3+dfsg1-1ubuntu0.6
=16.04
All of
ubuntu/libxml2<2.9.1+dfsg1-3ubuntu4.13
2.9.1+dfsg1-3ubuntu4.13
=14.04
All of
ubuntu/libxml2-utils<2.9.1+dfsg1-3ubuntu4.13
2.9.1+dfsg1-3ubuntu4.13
=14.04
All of
ubuntu/python-libxml2<2.9.1+dfsg1-3ubuntu4.13
2.9.1+dfsg1-3ubuntu4.13
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3739-1?

    The severity of USN-3739-1 is moderate.

  • What software is affected by USN-3739-1?

    The libxml2 package, libxml2-utils package, python-libxml2 package, and python3-libxml2 package in Ubuntu versions 18.04, 16.04, and 14.04 are affected by USN-3739-1.

  • How can an attacker exploit the libxml2 vulnerabilities described in USN-3739-1?

    An attacker could exploit the libxml2 vulnerabilities to expose sensitive information or cause a denial of service.

  • How can I fix the libxml2 vulnerabilities described in USN-3739-1?

    Update the libxml2 package, libxml2-utils package, python-libxml2 package, and python3-libxml2 package to version 2.9.4+dfsg1-6.1ubuntu1.2 (Ubuntu 18.04), 2.9.3+dfsg1-1ubuntu0.6 (Ubuntu 16.04), or 2.9.1+dfsg1-3ubuntu4.13 (Ubuntu 14.04) or later.

  • Where can I find more information about USN-3739-1?

    You can find more information about USN-3739-1 on the Ubuntu Security Notice page: [link].

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