[USN-6371-1] libssh2 vulnerability
Ubuntu Security Notice USN-6371-1
September 14, 2023
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
libssh2 could be made to crash if it received specially
crafted network traffic.
- libssh2: Client-side C library implementing the SSH2 protocol
It was discovered that libssh2 incorrectly handled memory
access. An attacker could possibly use this issue to cause
The problem can be corrected by updating your system to the following
Ubuntu 20.04 LTS:
Ubuntu 18.04 LTS:
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
In general, a standard system update will make all the necessary changes.
A libssh2t security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, 18.04 LTS, and 20.04 LTS.