1. Ubuntu Security Notices
  2. USN-4618-1

USN-4618-1: tmux vulnerability

Publication date

5 November 2020

Overview

tmux could be made to crash or execute arbitrary code if it received a specially crafted input.

Releases

Packages

  • tmux - terminal multiplexer

Details

Sergey Nizovtsev discovered that tmux incorrectly handled some inputs.
An attacker could possibly use this issue to cause a crash or execute arbitrary code.

Sergey Nizovtsev discovered that tmux incorrectly handled some inputs.
An attacker could possibly use this issue to cause a crash or execute arbitrary code.

Update instructions

After a standard system update you need to restart tmux session to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.10 groovy tmux –  3.1b-1ubuntu0.1
20.04 focal tmux –  3.0a-2ubuntu0.2

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References

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