Remote exploit of CUPS

Security researcher Simone Margaritelli has reported a new vulnerability in CUPS, the software that many Linux systems use to manage printers and print jobs. Margaritelli describes the impact of the attack by saying:

A remote unauthenticated attacker can silently replace existing printers' (or install new ones) IPP urls with a malicious one, resulting in arbitrary command execution (on the computer) when a print job is started (from that computer).

The vulnerability relies on a few related problems in CUPS libraries and utilities; versions before 2.0.1 or 2.1b1 (depending on the component) may be affected.

Red Hat has released a security bulletin as well.