Ubuntu Security Notice USN-4327-1
April 09, 2020
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
libssh could be made to crash if it received specially crafted network
- libssh: A tiny C SSH library
Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A
remote attacker could possibly use this issue to cause libssh to crash,
resulting in a denial of service.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.