USN-4762-1: OpenSSH vulnerability

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS

Packages

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

Details

It was discovered that the OpenSSH ssh-agent incorrectly handled memory. A
remote attacker able to connect to the agent could use this issue to cause
it to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions

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

Ubuntu 20.10

• openssh-client - 1:8.3p1-1ubuntu0.1

Ubuntu 20.04

• openssh-client - 1:8.2p1-4ubuntu0.2

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

References

• CVE-2021-28041