USN-4219-1: libssh vulnerability
libssh vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
libssh could be made to run programs under certain conditions.
Software Description
- libssh – A tiny C SSH library
Details
It was discovered that libssh incorrectly handled certain scp commands. If
a user or automated system were tricked into using a specially-crafted scp
command, a remote attacker could execute arbitrary commands on the server.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- libssh-4 – 0.9.0-1ubuntu1.3
- Ubuntu 19.04
- libssh-4 – 0.8.6-3ubuntu0.3
- Ubuntu 18.04 LTS
- libssh-4 – 0.8.0~20170825.94fa1e38-1ubuntu0.5
- Ubuntu 16.04 LTS
- libssh-4 – 0.6.3-4.3ubuntu0.5
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-4219-1: libssh vulnerability
