Ubuntu Security Notice USN-6887-1

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Ubuntu Security Notice USN-6887-1
July 09, 2024

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

– Ubuntu 24.04 LTS

Summary:

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

Software Description:
– 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.

Update instructions:

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

Ubuntu 24.04 LTS
openssh-client 1:9.6p1-3ubuntu13.4
openssh-server 1:9.6p1-3ubuntu13.4

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

References:
https://ubuntu.com/security/notices/USN-6887-1
CVE-2024-39894

Package Information:
https://launchpad.net/ubuntu/+source/openssh/1:9.6p1-3ubuntu13.4