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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.1597 Multiple Security Vulnerabilities in the libexpat Library May Lead to a Denial of Service (DoS) Condition 4 December 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libexpat Publisher: Sun Microsystems Operating System: Solaris Impact/Access: Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2009-3720 CVE-2009-3560 Reference: ESB-2009.1512 Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-273630-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Multiple Security Vulnerabilities in the libexpat Library May Lead to a Denial of Service (DoS) Condition _________________________________________________________________ Category : Security Release Phase : Workaround Bug Id : 6905480 Product : Solaris 10 Operating System OpenSolaris Date of Workaround Release : 02-Dec-2009 Multiple Security Vulnerabilities in the libexpat Library May Lead to a Denial of Service (DoS) Condition 1. Impact Multiple security vulnerabilities have been identified in libexpat, a library for parsing XML files. These vulnerabilities may allow a local or remote unprivileged user to create a crafted XML file that may cause an application linked with libexpat to crash, resulting in a Denial of Service (DoS) condition. Additional information regarding these issues is available at: CVE-2009-3720 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3720 CVE-2009-3560 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3560 2. Contributing Factors These issues can occur in the following releases: SPARC Platform * Solaris 10 * OpenSolaris based upon builds snv_01 through snv_129 x86 Platform * Solaris 10 * OpenSolaris based upon builds snv_01 through snv_129 Note: Solaris 8 and 9 do not bundle libexpat, therefore are not impacted by these issues. 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_111 3. Symptoms If the described issues have been exploited, the application which makes use of the libexpat library will crash, potentially leaving a core file depending on the system configuration. 4. Workaround The following T-Patches are available from http://sunsolve.sun.com/tpatches for the following releases: SPARC Platform * Solaris 10 T-Patch T137147-05 x86 Platform * Solaris 10 T-Patch T137148-05 Note: This document refers to one or more preliminary temporary patches (T-Patches) which are designed to address the concerns identified herein. Sun has limited experience with these patches due to their preliminary nature. As such, you should only install the patches on systems meeting the configurations described above. Sun may release full patches at a later date, however, Sun is under no obligation whatsoever to create, release, or distribute any such patch. 5. Resolution These issues are addressed in the following releases: SPARC Platform * OpenSolaris based upon builds snv_130 or later x86 Platform * OpenSolaris based upon builds snv_130 or later A final resolution is pending completion for Solaris 10. 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. 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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 iD8DBQFLGE/HNVH5XJJInbgRAvJbAJsHq5v2tZ+WsuVpW3wbjl3e3CA78ACfQbI5 e8hacPBRxifqRKjHk2tjSDI= =MmvE -----END PGP SIGNATURE-----