USN-4058-2: Bash vulnerability

Releases

• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• bash - GNU Bourne Again SHell

Details

USN-4058-1 fixed a vulnerability in bash. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that Bash incorrectly handled the restricted shell. An
attacker could possibly use this issue to escape restrictions and execute
any command.

Update instructions

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

Ubuntu 14.04

• bash - 4.3-7ubuntu1.8+esm1

Ubuntu 12.04

• bash - 4.2-2ubuntu2.8

In general, a standard system update will make all the necessary changes.

References

• CVE-2019-9924

Related notices

• USN-4058-1: bash-static, bash-doc, bash-builtins, bash