HPLIP: Privilege escalation

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200710-26 / hplip
Release Date	October 24, 2007
Latest Revision	October 24, 2007: 01
Impact	high
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-print/hplip	< 2.7.9-r1	revision >= 1.7.4a-r2, >= 2.7.9-r1	All supported architectures

Related bugreports: #195565

Synopsis

The hpssd daemon might allow local attackers to execute arbitrary commands with root privileges.

2. Impact Information

Background

The Hewlett-Packard Linux Imaging and Printing system (HPLIP) provides drivers for HP's inkjet and laser printers, scanners and fax machines. It integrates with the Common UNIX Printing System (CUPS) and Scanner Access Now Easy (SANE).

Description

Kees Cook from the Ubuntu Security team discovered that the hpssd daemon does not correctly validate user supplied data before passing it to a "popen3()" call.

Impact

A local attacker may be able to exploit this vulnerability by sending a specially crafted request to the hpssd daemon to execute arbitrary commands with the privileges of the user running hpssd, usually root.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All HPLIP users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose "net-print/hplip"

4. References

CVE-2007-5208

Updated October 24, 2007

Summary: This is a Gentoo Linux Security Advisory

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