[USN-4746-1] xterm vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Feb 24 14:53:11 UTC 2021

Ubuntu Security Notice USN-4746-1
February 24, 2021

xterm vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


xterm could be made to crash or run programs if it handled specially
crafted character sequences.

Software Description:
- xterm: X terminal emulator


Tavis Ormandy discovered that xterm incorrectly handled certain character
sequences. A remote attacker could use this issue to cause xterm to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 20.10:
  xterm                           353-1ubuntu1.20.10.2

Ubuntu 20.04 LTS:
  xterm                           353-1ubuntu1.20.04.2

Ubuntu 18.04 LTS:
  xterm                           330-1ubuntu2.2

Ubuntu 16.04 LTS:
  xterm                           322-1ubuntu1.2

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


Package Information:

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