Multiple Security Vulnerabilities in Common UNIX Printing System (CUPS) May Allow a Remote User to Execute Arbitrary Code

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Multiple Security Vulnerabilities in Common UNIX Printing System (CUPS) May Allow a Remote User to Execute Arbitrary Code

1. Impact

The Common UNIX Printing System (CUPS) as shipped with OpenSolaris is impacted by multiple security vulnerabilities affecting the "imagetops", "texttops" and "hpgltops" filters. These vulnerabilities may allow a local or remote unprivileged user to execute arbitrary code with the privileges of the CUPS service (which usually runs as root).

These issues are described in the following documents:



2. Contributing Factors

These issues can occur in the following releases:

SPARC Platform:

• OpenSolaris based upon builds snv_87 through snv_102

x86 Platform:

• OpenSolaris based upon builds snv_87 through snv_102

Notes:

1. Solaris 8, 9, and 10 are not impacted by these issues.

OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. The base build can be derived as follows:

$ uname -v
snv_101

2. These vulnerabilities only affect systems which are configured to use the CUPS software. This can be determined by checking the status of the appropriate SMF (smf(5)) service as in the following example:

% svcs application/cups/in-lpd
STATE          STIME    FMRI
enabled       Mar_19   svc:/application/cups/in-lpd:default

3. A system is only vulnerable to a remote user while sharing a printer(s) on the network. To determine if a printer is being network shared, the following command can be run:

# grep Listen /etc/cups/cupsd.conf
Listen localhost:631
Listen /var/run/cups/cups.sock

In the case above, it is listening only on the local interfaces.

3. Symptoms

There are no predictable symptoms that would indicate the described issues have been exploited.

4. Workaround

There is no workaround for these issues. Please see the "Resolution" section below.

5. Resolution

These issues are addressed in the following releases:

SPARC Platform:

• OpenSolaris based upon builds snv_103 or later

x86 Platform:

• OpenSolaris based upon builds snv_103 or later

For more information on Security Sun Alerts, see Technical Instruction ID 213557.

This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements.

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