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USN-4176-1: GNU cpio vulnerability

06 November 2019

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



  • cpio - a tool to manage archives of files


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

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.