Advisory Published

USN-6543-1: GNU Tar vulnerability

First published: Mon Dec 11 2023(Updated: )

It was discovered that tar incorrectly handled extended attributes in PAX archives. An attacker could use this issue to cause tar to crash, resulting in a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/tar<1.34+dfsg-1.2ubuntu1.1
1.34+dfsg-1.2ubuntu1.1
=23.10
All of
ubuntu/tar<1.34+dfsg-1.2ubuntu0.2
1.34+dfsg-1.2ubuntu0.2
=23.04
All of
ubuntu/tar<1.34+dfsg-1ubuntu0.1.22.04.2
1.34+dfsg-1ubuntu0.1.22.04.2
=22.04
All of
ubuntu/tar<1.30+dfsg-7ubuntu0.20.04.4
1.30+dfsg-7ubuntu0.20.04.4
=20.04
All of
ubuntu/tar<1.29b-2ubuntu0.4+esm1
1.29b-2ubuntu0.4+esm1
=18.04
All of
ubuntu/tar<1.28-2.1ubuntu0.2+esm3
1.28-2.1ubuntu0.2+esm3
=16.04
All of
ubuntu/tar<1.27.1-1ubuntu0.1+esm4
1.27.1-1ubuntu0.1+esm4
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6543-1?

    The severity of USN-6543-1 is not specified.

  • What is the affected software for USN-6543-1?

    The affected software for USN-6543-1 is the tar package on various versions of Ubuntu.

  • How does the vulnerability in USN-6543-1 impact the system?

    The vulnerability in USN-6543-1 could allow an attacker to crash the tar program, resulting in a denial of service.

  • How can I fix the vulnerability in USN-6543-1?

    To fix the vulnerability in USN-6543-1, update the tar package to the recommended version provided by Ubuntu.

  • Where can I find more information about USN-6543-1?

    More information about USN-6543-1 can be found at the following references: [CVE-2023-39804](https://ubuntu.com/security/CVE-2023-39804), [Ubuntu Security Notice](https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1.2ubuntu1.1), [Ubuntu Launchpad](https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1.2ubuntu0.2)

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