USN-3294-2: Bash vulnerability

Ubuntu Security Notice USN-3294-2

1st August, 2017

bash vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS

Summary

A security issues were fixed in Bash.

Software description

  • bash - GNU Bourne Again SHell

Details

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)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 12.04 LTS:
bash 4.2-2ubuntu2.7

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

CVE-2016-7543