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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.1453 Multiple Integer Overflow Vulnerabilities in the FreeType 2 Font Engine May Lead to a Denial of Service (DoS) or Allow Execution of Arbitrary Code 28 October 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FreeType 2 Font Engine Publisher: Sun Microsystems Operating System: Solaris OpenSolaris Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2009-0946 Reference: ESB-2009.0421 Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-270268-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Multiple Integer Overflow Vulnerabilities in the FreeType 2 Font Engine May Lead to a Denial of Service (DoS) or Allow Execution of Arbitrary Code _________________________________________________________________ Category : Security Release Phase : Preliminary Bug Id : 6877323 Product : Solaris 8 Solaris 9 Solaris 10 OpenSolaris Multiple Integer Overflow Vulnerabilities in the FreeType 2 Font Engine ... 1. Impact Multiple integer overflow vulnerabilities in the FreeType 2 Font Library (libfreetype) may affect applications that make use of this library. Depending on the application, this vulnerability may allow a local or remote unprivileged user to crash the application through a specially crafted font file, resulting in a Denial of service(DOS) or to execute arbitrary code with the privileges of the user running that application. These issues are also described in the following document CVE-2009-0946 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0946 2. Contributing Factors These issues can occur in the following releases: SPARC Platform * X11 6.4.1 (for Solaris 8) * Solaris 9 * Solaris 10 * OpenSolaris based upon builds snv_01 through snv_123 x86 Platform * X11 6.4.1 (for Solaris 8) * Solaris 9 * Solaris 10 * OpenSolaris based upon builds snv_01 through snv_123 Note 1: To determine if FreeType 2 is installed on a system, the following command can be run: $ pkginfo SUNWfreetype2 system SUNWfreetype2 FreeType2 Font library Note 2: To determine if an application is linked with the libfreetype library, the ldd(1) utility can be utilized as in the following example: $ ldd /usr/bin/gedit | grep libfreetype libfreetype.so.6 => /usr/sfw/lib/libfreetype.so.6 A comprehensive test to check if an application links with a library such as libfreetype requires the use of pldd(1) against the running application since ldd(1) does not list any shared objects explicitly attached using dlopen(3C). For example: $ pldd <procces ID of application> | grep libfreetype /usr/sfw/lib/libfreetype.so.6 Note 3: 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_120 3. Symptoms If the described issues are exploited to cause a Denial of Service (DoS) to an application which links to the libfreetype library, the application will exit and may generate an error message about a Segmentation Fault, potentially writing a core(4) file. There are no predictable symptoms that would indicate the issue has been exploited to execute arbitrary code with elevated privileges. 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_124 or later x86 Platform * OpenSolaris based upon builds snv_124 or later A final resolution is pending completion for Solaris 8, 9 and 10. 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 iD8DBQFK54IZNVH5XJJInbgRAvnZAJ9Uv564Q8ULCT6RIs610zNeXLLkRACdFEyn DzQZuLR43uV8f3XPEotXJvk= =b+9Y -----END PGP SIGNATURE-----