==========================================================================
Ubuntu Security Notice USN-6543-1
December 11, 2023
tar vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Summary:
tar could be made to crash if it opened a specially crafted file.
Software Description:
- tar: GNU version of the tar archiving utility
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
  tar                             1.34+dfsg-1.2ubuntu1.1
Ubuntu 23.04:
  tar                             1.34+dfsg-1.2ubuntu0.2
Ubuntu 22.04 LTS:
  tar                             1.34+dfsg-1ubuntu0.1.22.04.2
Ubuntu 20.04 LTS:
  tar                             1.30+dfsg-7ubuntu0.20.04.4
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  tar                             1.29b-2ubuntu0.4+esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  tar                             1.28-2.1ubuntu0.2+esm3
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
  tar                             1.27.1-1ubuntu0.1+esm4
In general, a standard system update will make all the necessary changes.
References:
  https://ubuntu.com/security/notices/USN-6543-1
  CVE-2023-39804
Package Information:
  https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1.2ubuntu1.1
  https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1.2ubuntu0.2
  https://launchpad.net/ubuntu/+source/tar/1.34+dfsg-1ubuntu0.1.22.04.2
  https://launchpad.net/ubuntu/+source/tar/1.30+dfsg-7ubuntu0.20.04.4