ESB-2020.3335 – [Ubuntu] Teeworlds: Denial of service – Remote/unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3335
                    USN-4553-1: Teeworlds vulnerability
                             29 September 2020

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

Product:           Teeworlds
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-12066  

Reference:         ESB-2020.3147

Original Bulletin: 
   https://usn.ubuntu.com/4553-1/

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USN-4553-1: Teeworlds vulnerability
28 September 2020

Teeworlds could be made to crash if it received specially crafted network
traffic.
Releases

  o Ubuntu 20.04 LTS

Packages

  o teeworlds - online multi-player platform 2D shooter

Details

It was discovered that Teeworlds server did not properly handler certain
network traffic. A remote, unauthenticated attacker could use this
vulnerability to cause Teeworlds server to crash.

Update instructions

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

Ubuntu 20.04

  o teeworlds-server - 0.7.2-5ubuntu1.1

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

References

  o CVE-2020-12066

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