USN-6887-1: OpenSSH vulnerability

Publication date

9 July 2024

Overview

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

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
24.04 noble openssh-client –  1:9.6p1-3ubuntu13.4
openssh-server –  1:9.6p1-3ubuntu13.4

Reduce your security exposure

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Have additional questions?

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