Linux Security
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    Linux Security

    Ubuntu 4618-1: tmux vulnerability

    Date 05 Nov 2020
    362
    Posted By LinuxSecurity Advisories
    tmux could be made to crash or execute arbitrary code if it received a specially crafted input.
    ==========================================================================
    Ubuntu Security Notice USN-4618-1
    November 05, 2020
    
    tmux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 20.10
    - Ubuntu 20.04 LTS
    
    Summary:
    
    tmux could be made to crash or execute arbitrary code if it received
    a specially crafted input.
    
    Software Description:
    - 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.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 20.10:
      tmux                            3.1b-1ubuntu0.1
    
    Ubuntu 20.04 LTS:
      tmux                            3.0a-2ubuntu0.2
    
    After a standard system update you need to restart tmux session to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4618-1
      CVE-2020-27347
    
    Package Information:
      https://launchpad.net/ubuntu/+source/tmux/3.1b-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/tmux/3.0a-2ubuntu0.2
    

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