Note: This is an archival copy of Security Sun Alert 275230 as previously published on http://sunsolve.sun.com.
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1021763.1.
Article ID : 1021763.1
Article Type : Sun Alerts (SURE)
Last reviewed : 2010-01-06
Audience : PUBLIC
Copyright Notice: Copyright © 2010, Oracle Corporation and/or its affiliates.

A "use-after-free" Vulnerability in the OpenSolaris Common Unix Printing System (CUPS) may Lead to a Denial of Service (DoS) Condition



Category
Security

Release Phase
Resolved

Bug Id
6900557

Product
OpenSolaris

Date of Resolved Release
07-Jan-2010

A "use-after-free" security vulnerability has been identified in the Common Unix Printing System (CUPS):

1. Impact

A "use-after-free" security vulnerability has been identified in the Common Unix Printing System (CUPS) related to handling references in its file descriptors-handling interface. This vulnerability may allow a local or remote unprivileged user to crash cupsd(8) via a specially crafted query to get the list of current print jobs for a specific printer, resulting in a Denial of Service (DoS).

This issue is also described in the following document:

CVE-2009-3553 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3553

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform
  • OpenSolaris based upon builds snv_87 through snv_130
x86 Platform
  • OpenSolaris based upon builds snv_87 through snv_130
Note 1: Solaris 8, 9 and 10 are not impacted by this issue.

Note 2: OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived.  To determine the base build of OpenSolaris, the following command can be used:
    $ uname -v
snv_86
Note 3: This vulnerability only affects OpenSolaris systems which have installed the CUPS package (SUNWcups). The SUNWcups package is not installed by default. To determine if the SUNWcups package is installed, the following command can be run:
    $ pkg info SUNWcups
Note 4: This vulnerability only affects OpenSolaris systems which have configured and enabled CUPS for printing. To determine if  CUPS has been enabled, the following command can be run:
    $ svcs cups/in-lpd
STATE STIME FMRI
enabled 20:03:32 svc:/application/cups/in-lpd:default
3. Symptoms

If the described issue has been exploited to cause a Denial of Service (DoS), cupsd(8) will crash, potentially leaving a core file depending on the system configuration.

4. Workaround

There is no workaround for this issue. Please see the Resolution section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform
  • OpenSolaris based upon builds snv_131 or later
x86 Platform
  • OpenSolaris based upon builds snv_131 or later

For more information 
on Security Sun Alerts, see  1009886.1.
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