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Ubuntu Security Notice USN-7336-1
March 06, 2025

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

gnuchess could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- gnuchess: Plays a game of chess, either against the user or against itself

Details:

Michael Vaughan discovered an overflow vulnerability in GNU Chess that
occurs when reading a specially crafted Portable Game Notation (PGN)
file. An attacker could possibly use this issue to cause GNU Chess to
crash, resulting in a denial of service, or the execution of arbitrary
code.

Update instructions:

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

Ubuntu 24.10
  gnuchess                        6.2.7-1+deb11u1build0.24.10.1

Ubuntu 24.04 LTS
  gnuchess                        6.2.7-1+deb11u1build0.24.04.1

Ubuntu 22.04 LTS
  gnuchess                        6.2.7-1+deb11u1build0.22.04.1

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

References:
  https://ubuntu.com/security/notices/USN-7336-1
  CVE-2021-30184

Package Information:
https://launchpad.net/ubuntu/+source/gnuchess/6.2.7-1+deb11u1build0.24.10.1
https://launchpad.net/ubuntu/+source/gnuchess/6.2.7-1+deb11u1build0.24.04.1
https://launchpad.net/ubuntu/+source/gnuchess/6.2.7-1+deb11u1build0.22.04.1