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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.1345.2 A Security Vulnerability in xscreensaver May Display Portions of a Locked Desktop if the Screen is Resized 29 September 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xscreensaver Publisher: Sun Microsystems Operating System: Solaris OpenSolaris Impact/Access: Read-only Data Access -- Console/Physical Resolution: Patch/Upgrade CVE Names: CVE-2009-3432 Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-249646-1 Revision History: September 29 2009: Added CVE Reference September 28 2009: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Solution Type: Sun Alert Solution 249646 : A Security Vulnerability in xscreensaver(1) May Display Portions of a Locked Desktop if the Screen is Resized Bug ID: 6757448 Product: Solaris 10 Operating System OpenSolaris Date of Resolved Release: 22-Sep-2009 SA Document Body A security vulnerability in xscreensaver(1) may display portions of a locked desktop after being resized: 1. Impact A security vulnerability in the xscreensaver(1) program may allow users with physical access to an X(5) display running the Xorg(1) X server (or Xnewt(1M) X server for Sun Ray servers) which has the X Resize and Rotate (RandR) extension loaded to be able to view portions of the locked screen. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 10 without patch 120094-26 * OpenSolaris based upon builds snv_01 through snv_111 x86 Platform * Solaris 10 without patch 120095-26 * OpenSolaris based upon builds snv_01 through snv_111 Note 1: Solaris 8 and Solaris 9 are not impacted by this issue. Note 2: This issue only affects systems configured to use the Xorg(1) X server (or Xnewt(1M) X server for Sun Ray servers). To determine which X Window System display server program (see Xserver(1)) is configured on a Solaris (non-Sun Ray server) system the following command can be run: $ svcprop -p options/server svc:/application/x11/x11-server /usr/X11/bin/Xorg To determine which X Window System display server program (see Xserver(1)) is configured on a Sun Ray server the following command can be run: $ /opt/SUNWut/bin/utxconfig -l |grep XSERVER XSERVER_PREF=Xnewt Note 3: This issue only affects systems which have used the RandR extension to resize the screen (for example using the xrandr(1) utility). To determine if the RandR extension is loaded, the xdpyinfo(1) utility can be run: $ xdpyinfo | grep RANDR RANDR Note 4: 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 5: Only OpenSolaris installations that include the affected binary "/usr/X11/bin/xscreensaver", are impacted by this issue. 3. Symptoms If the RandR extension has been used to increase the size of the screen, for example using xrandr(1), then xscreensaver(1) will only cover the original screen size. 4. Workaround To work around the described issue once the screen has been resized using the RandR extension, restarting xscreensaver(1) using the following command: $ /usr/X11/bin/xscreensaver-command -restart will resolve the issue. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 10 with patch 120094-26 or later * OpenSolaris based upon builds snv_112 or later x86 Platform * Solaris 10 with patch 120095-26 or later * OpenSolaris based upon builds snv_112 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. Copyright 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFKwWuYNVH5XJJInbgRAtxvAJ4wDkEQUyW/XZ2f3WRxFXMIiJBbugCeMPbg NdE1h2wrqB7Xh//+YibJRIs= =pNsi -----END PGP SIGNATURE-----