Foomatic: Arbitrary command execution in foomatic-rip filter

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200409-24 / foomatic
Release Date	September 20, 2004
Latest Revision	September 20, 2004: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-print/foomatic	<= 3.0.1	>= 3.0.2	All supported architectures
net-print/foomatic-filters	<= 3.0.1	>= 3.0.2	All supported architectures

Related bugreports: #64166

Synopsis

The foomatic-rip filter in foomatic-filters contains a vulnerability which may allow arbitrary command execution on the print server.

2. Impact Information

Background

Foomatic is a system for connecting printer drivers with spooler systems such as CUPS and LPD. The foomatic-filters package contains wrapper scripts which are designed to be used with Foomatic.

Description

There is a vulnerability in the foomatic-filters package. This vulnerability is due to insufficient checking of command-line parameters and environment variables in the foomatic-rip filter.

Impact

This vulnerability may allow both local and remote attackers to execute arbitrary commands on the print server with the permissions of the spooler (oftentimes the "lp" user).

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All foomatic users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=net-print/foomatic-3.0.2"
# emerge ">=net-print/foomatic-3.0.2"

PLEASE NOTE: You should update foomatic, instead of foomatic-filters. This will help to ensure that all other foomatic components remain functional.

4. References

Page updated September 20, 2004

Summary: This is a Gentoo Linux Security Advisory

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