CUPS: Multiple vulnerabilities

Security Team Contact Address

Updated April 01, 2008

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200804-01 / cups
Release Date	April 01, 2008
Latest Revision	April 01, 2008: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-print/cups	< 1.2.12-r7	>= 1.2.12-r7	All supported architectures

Related bugreports: #211449, #212364, #214068

Synopsis

Multiple vulnerabilities have been discovered in CUPS, allowing for the remote execution of arbitrary code and a Denial of Service.

2. Impact Information

Background

CUPS provides a portable printing layer for UNIX-based operating systems.

Description

Multiple vulnerabilities have been reported in CUPS:

regenrecht (VeriSign iDefense) discovered that the cgiCompileSearch() function used in several CGI scripts in CUPS' administration interface does not correctly calculate boundaries when processing a user-provided regular expression, leading to a heap-based buffer overflow (CVE-2008-0047).
Helge Blischke reported a double free() vulnerability in the process_browse_data() function when adding or removing remote shared printers (CVE-2008-0882).
Tomas Hoger (Red Hat) reported that the gif_read_lzw() function uses the code_size value from GIF images without properly checking it, leading to a buffer overflow (CVE-2008-1373).
An unspecified input validation error was discovered in the HP-GL/2 filter (CVE-2008-0053).

Impact

A local attacker could send specially crafted network packets or print jobs and possibly execute arbitrary code with the privileges of the user running CUPS (usually lp), or cause a Denial of Service. The vulnerabilities are exploitable via the network when CUPS is sharing printers remotely.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All CUPS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-print/cups-1.2.12-r7"

4. References