Issued:

2010-10-28

Updated:

2010-10-28

RHSA-2010:0811 - Important: cups security update

Synopsis

Important: cups security update

Type/Severity

Security Advisory Important

Topic

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

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX operating systems.

A use-after-free flaw was found in the way the CUPS server parsed Internet Printing Protocol (IPP) packets. A malicious user able to send IPP requests to the CUPS server could use this flaw to crash the CUPS server or, potentially, execute arbitrary code with the privileges of the CUPS server. (CVE-2010-2941)

A possible privilege escalation flaw was found in CUPS. An unprivileged process running as the "lp" user (such as a compromised external filter program spawned by the CUPS server) could trick the CUPS server into overwriting arbitrary files as the root user. (CVE-2010-2431)

Red Hat would like to thank Emmanuel Bouillon of NATO C3 Agency for reporting the CVE-2010-2941 issue.

Users of cups are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the cupsd daemon will be restarted automatically.

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

Updated Packages

• cups-lpd-1.3.7-18.el5_5.8.ia64.rpm
• cups-lpd-1.3.7-18.el5_5.8.ppc.rpm
• cups-libs-1.3.7-18.el5_5.8.s390.rpm
• cups-1.3.7-18.el5_5.8.ppc.rpm
• cups-1.3.7-18.el5_5.8.x86_64.rpm
• cups-libs-1.3.7-18.el5_5.8.x86_64.rpm
• cups-devel-1.3.7-18.el5_5.8.ppc.rpm
• cups-1.3.7-18.el5_5.8.s390x.rpm
• cups-devel-1.3.7-18.el5_5.8.s390x.rpm
• cups-1.3.7-18.el5_5.8.i386.rpm
• cups-libs-1.3.7-18.el5_5.8.i386.rpm
• cups-devel-1.3.7-18.el5_5.8.x86_64.rpm
• cups-1.3.7-18.el5_5.8.ia64.rpm
• cups-lpd-1.3.7-18.el5_5.8.s390x.rpm
• cups-lpd-1.3.7-18.el5_5.8.x86_64.rpm
• cups-libs-1.3.7-18.el5_5.8.s390x.rpm
• cups-devel-1.3.7-18.el5_5.8.i386.rpm
• cups-libs-1.3.7-18.el5_5.8.ppc64.rpm
• cups-devel-1.3.7-18.el5_5.8.s390.rpm
• cups-devel-1.3.7-18.el5_5.8.ia64.rpm
• cups-lpd-1.3.7-18.el5_5.8.i386.rpm
• cups-libs-1.3.7-18.el5_5.8.ia64.rpm
• cups-1.3.7-18.el5_5.8.src.rpm
• cups-libs-1.3.7-18.el5_5.8.ppc.rpm
• cups-devel-1.3.7-18.el5_5.8.ppc64.rpm

Fixes

• This content is not included.BZ - 605397
• This content is not included.BZ - 624438

CVEs

• CVE-2010-2941
• CVE-2010-2431

References

• http://www.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.