A security issues were fixed in Bash.
USN-3294-1 fixed a vulnerability in Bash. This update provides the corresponding update for Ubuntu 12.04 ESM.
1 August 2017
A security issue affects these releases of Ubuntu and its derivatives:
A security issues were fixed in Bash.
USN-3294-1 fixed a vulnerability in Bash. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. (CVE-2016-7543)
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