USN-4327-1: libssh vulnerability
libssh vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
Summary
libssh could be made to crash if it received specially crafted network
traffic.
Software Description
- libssh – A tiny C SSH library
Details
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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- libssh-4 – 0.9.0-1ubuntu1.4
- Ubuntu 18.04 LTS
- libssh-4 – 0.8.0~20170825.94fa1e38-1ubuntu0.6
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4327-1: libssh vulnerability
