USN-6887-1: OpenSSH vulnerability

9 July 2024

OpenSSH could be made to expose timing information over the network.

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Releases

Packages

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

Details

Philippos Giavridis, Jacky Wei En Kung, Daniel Hugenroth, and Alastair
Beresford discovered that the OpenSSH ObscureKeystrokeTiming feature did
not work as expected. A remote attacker could possibly use this issue to
determine timing information about keystrokes.

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 24.04

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

References

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Further reading