rssh could be made to run arbitrary commands if it received specially crafted input.
It was discovered that rssh incorrectly handled certain command-line arguments and environment variables. An authenticated user could bypass rssh’s command restrictions, allowing an attacker to run arbitrary commands.
11 April 2019
A security issue affects these releases of Ubuntu and its derivatives:
rssh could be made to run arbitrary commands if it received specially crafted input.
It was discovered that rssh incorrectly handled certain command-line arguments and environment variables. An authenticated user could bypass rssh’s command restrictions, allowing an attacker to run arbitrary commands.
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon