USN-7457-1: OpenSSH vulnerability

24 April 2025

OpenSSH could allow unintended access to network services.

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Releases

Packages

  • openssh - secure shell (SSH) for secure access to remote machines

Details

It was discovered that OpenSSH incorrectly handled the DisableForwarding
directive. The directive would fail to disable X11 and agent forwarding,
contrary to documentation and expectations.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 25.04
Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04

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

References

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Further reading