USN-6859-1: OpenSSH vulnerability

Releases

• Ubuntu 24.04 LTS
• Ubuntu 23.10
• Ubuntu 22.04 LTS

Packages

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

Details

It was discovered that OpenSSH incorrectly handled signal management. A
remote attacker could use this issue to bypass authentication and remotely
access systems without proper credentials.

Update instructions

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

Ubuntu 24.04

• openssh-client - 1:9.6p1-3ubuntu13.3
• openssh-server - 1:9.6p1-3ubuntu13.3

Ubuntu 23.10

• openssh-client - 1:9.3p1-1ubuntu3.6
• openssh-server - 1:9.3p1-1ubuntu3.6

Ubuntu 22.04

• openssh-client - 1:8.9p1-3ubuntu0.10
• openssh-server - 1:8.9p1-3ubuntu0.10

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

References

• CVE-2024-6387