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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.0691
                      USN-5843-1: tmux vulnerability
                              7 February 2023

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           tmux
Publisher:         Ubuntu
Operating System:  Ubuntu
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-47016  

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-5843-1

Comment: CVSS (Max):  7.8 CVE-2022-47016 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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USN-5843-1: tmux vulnerability

6 February 2023

tmux could be made to crash if it received a specially crafted input.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

  o Ubuntu 22.10
  o Ubuntu 22.04 LTS
  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 ESM
  o Ubuntu 14.04 ESM

Packages

  o tmux - terminal multiplexer

Details

It was discovered that tmux incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 22.10

  o tmux - 3.3a-1ubuntu0.1

Ubuntu 22.04

  o tmux - 3.2a-4ubuntu0.2

Ubuntu 20.04

  o tmux - 3.0a-2ubuntu0.4

Ubuntu 18.04

  o tmux - 2.6-3ubuntu0.3

Ubuntu 16.04

  o tmux - 2.1-3ubuntu0.1~esm1
    Available with Ubuntu Pro

Ubuntu 14.04

  o tmux - 1.8-5ubuntu0.1~esm1
    Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

  o CVE-2022-47016

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
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The University of Queensland
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===========================================================================
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