A Security Vulnerability May Allow Popup Windows to Appear Through the Solaris XScreenSaver Program

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A Security Vulnerability May Allow Popup Windows to Appear Through the Solaris XScreenSaver Program

1. Impact

A security vulnerability in the Solaris XScreenSaver (see xscreensaver(1)) program may allow popup windows to appear through the lock screen and expose sensitive data. An example application affected by this issue is Thunderbird, which notifies users about new mail through popup windows.

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• X11 6.4.1 (for Solaris 8) without patch 115298-02
• Solaris 9 without patch 115158-11 
• Solaris 10 without patch 120094-22
• OpenSolaris based upon builds snv_01 through snv_108

x86 Platform

• X11 6.4.1 (for Solaris 8) without patch 115299-02
• Solaris 9 without patch 115159-11
• Solaris 10 without patch 120095-22
• OpenSolaris based upon builds snv_01 through snv_108

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

Systems are only impacted by this issue of they have the package SUNWxwsvr installed. To determine if this package is installed, the following command can be run:

$ pkginfo SUNWxwsvr
system    SUNWxwsvr XScreenSaver

3. Symptoms

There are no predictable symptoms that would indicate the described vulnerability has been exploited to reveal sensitive information.

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

• X11 6.4.1 (for Solaris 8) with patch 115298-02 or later
• Solaris 9 with patch 115158-11 or later
• Solaris 10 with patch 120094-22 or later
• Open Solaris based upon builds snv_109 or later

x86 Platform

• X11 6.4.1 (for Solaris 8) with patch 115299-02 or later
• Solaris 9 with patch 115159-11 or later
• Solaris 10 with patch 120095-22 or later
• Open Solaris based upon builds snv_109 or later

Note: The resolution patches for this issue have caused a regression (BugID 6839026) for systems with Accessibility enabled or with Trusted extensions running.

Please see Sun Alert 266469 for more details at  http://sunsolve.sun.com/search/document.do?assetkey=1-66-266469-1

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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Modification History

14-Aug-2009: Updated Contributing Factors and Resolution sections; Resolved
27-Aug-2009: Updated Resolution section with additional Note for patches

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