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Category:   Application (Generic)  >   HPE Linux Imaging and Printing Project (hplip) Vendors:   hplip.sourceforge.net
(Red Hat Issues Fix) HP Linux Imaging and Printing Project (hplip) Bug in hpssd Message Parser Lets Local Users Deny Service
SecurityTracker Alert ID:  1020686
SecurityTracker URL:  http://securitytracker.com/id/1020686
CVE Reference:   CVE-2008-2941   (Links to External Site)
Date:  Aug 12 2008
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in HP Linux Imaging and Printing Project (hplip). A local user can cause denial of service conditions.

A local user can send specially crafted packets to the hpssd message parser to cause the hpssd process to crash.

The vulnerability resides in 'hpssd.py'.

A demonstration exploit is provided:

msg=0

Impact:   A local user can cause the hpssd process to crash.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0818.html

Vendor URL:  hplip.sourceforge.net/ (Links to External Site)
Cause:   Exception handling error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Aug 12 2008 HP Linux Imaging and Printing Project (hplip) Bug in hpssd Message Parser Lets Local Users Deny Service



 Source Message Contents

Subject:  [RHSA-2008:0818-02] Moderate: hplip security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: hplip security update
Advisory ID:       RHSA-2008:0818-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0818.html
Issue date:        2008-08-12
CVE Names:         CVE-2008-2940 CVE-2008-2941 
=====================================================================

1. Summary:

Updated hplip packages that fix various security issues are now available
for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, x86_64

3. Description:

The hplip (Hewlett-Packard Linux Imaging and Printing) packages provide
drivers for Hewlett-Packard printers and multifunction peripherals.

A flaw was discovered in the hplip alert-mailing functionality. A local
attacker could elevate their privileges by using specially-crafted packets
to trigger alert mails, which are sent by the root account. (CVE-2008-2940)

A flaw was discovered in the hpssd message parser. By sending
specially-crafted packets, a local attacker could cause a denial of
service, stopping the hpssd process. (CVE-2008-2941)

Users of hplip should upgrade to these updated packages, which contain
backported patches to correct these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  

This update is available via Red Hat Network.  Details on how to use 
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

455235 - CVE-2008-2940 hpssd of hplip allows unprivileged user to trigger alert mail
457052 - CVE-2008-2941 hplip hpssd.py Denial-Of-Service parsing vulnerability

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/hplip-1.6.7-4.1.el5_2.4.src.rpm

i386:
hpijs-1.6.7-4.1.el5_2.4.i386.rpm
hplip-1.6.7-4.1.el5_2.4.i386.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.i386.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.i386.rpm

x86_64:
hpijs-1.6.7-4.1.el5_2.4.x86_64.rpm
hplip-1.6.7-4.1.el5_2.4.x86_64.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.x86_64.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/hplip-1.6.7-4.1.el5_2.4.src.rpm

i386:
hpijs-1.6.7-4.1.el5_2.4.i386.rpm
hplip-1.6.7-4.1.el5_2.4.i386.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.i386.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.i386.rpm

ia64:
hpijs-1.6.7-4.1.el5_2.4.ia64.rpm
hplip-1.6.7-4.1.el5_2.4.ia64.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.ia64.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.ia64.rpm

ppc:
hpijs-1.6.7-4.1.el5_2.4.ppc.rpm
hplip-1.6.7-4.1.el5_2.4.ppc.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.ppc.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.ppc.rpm

x86_64:
hpijs-1.6.7-4.1.el5_2.4.x86_64.rpm
hplip-1.6.7-4.1.el5_2.4.x86_64.rpm
hplip-debuginfo-1.6.7-4.1.el5_2.4.x86_64.rpm
libsane-hpaio-1.6.7-4.1.el5_2.4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2940
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2941
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.
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