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USN-4058-1: Bash vulnerability

15 July 2019

A system hardening measure could be bypassed.

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Releases

Packages

  • bash - GNU Bourne Again SHell

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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04

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

References

Related notices

  • USN-4058-2: bash-doc, bash-builtins, bash, bash-static

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Further reading