USN-4176-1: GNU cpio vulnerability

6 November 2019

GNU cpio could be used to privilege escalation if it received a specially crafted input.

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

Releases

Packages

  • cpio - a tool to manage archives of files

Details

Thomas Habets discovered that GNU cpio incorrectly handled certain inputs.
An attacker could possibly use this issue to privilege escalation.

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 19.10
Ubuntu 19.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

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

References