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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0790 -- [Solaris] Multiple Security Vulnerabilities in the Solaris Tag Image File Format Library libtiff(3) 5 September 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Solaris 10 Operating System Solaris 9 Operating System Solaris 8 Operating System Publisher: Sun Microsystems Operating System: Solaris Impact: Execute Arbitrary Code/Commands Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2006-2024 CVE-2006-2025 CVE-2006-2026 Ref: ESB-2007.0724 Revision History: September 5 2008: Updated resolution section detailing patches available for Solaris 8 December 3 2007: Updated the Contributing Factors section to list vulnerable releases. Updated the Resolution section to include the patch for Solaris 9. November 14 2007: Updated the Impact section to correct the CVE references. October 15 2007: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Solution Type: Sun Alert Solution 201332 : Multiple Security Vulnerabilities in the Solaris Tag Image File Format Library libtiff(3) Previously Published As: 103099 Product Solaris 9 Operating System Solaris 10 Operating System Solaris 8 Operating System Bug ID: 6412202 Date of Workaround Release: 11-OCT-2007 Date of Resolved Release: 03-Sep-2008 SA Document Body Multiple Security Vulnerabilities in the Solaris Tag Image File Format Library libtiff(3) 1. Impact Multiple security vulnerabilities in the Solaris Tag Image File Format library (libtiff(3)) may allow a local or remote unprivileged user to crash applications that dynamically link to the "libtiff" library and execute arbitrary code with the privileges of a local user. The ability to crash an application that links to the "libtiff" library is a type of Denial of Service (DoS). Solaris ships several applications as part of the GNOME Desktop Environment that dynamically link with the "libtiff" library. These issues are described in the following documents: CVE-2006-2024 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2024 CVE-2006-2025 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2025 CVE-2006-2026 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2026 Sun acknowledges with thanks, Tavis Ormandy from the Google Security Team for bringing these issues to our attention. 2. Contributing Factors These issues can occur in the following releases: SPARC Platform * Solaris 8 without patch 139093-01 * Solaris 9 without patch 125673-01 * Solaris 10 without patch 119900-03 x86 Platform * Solaris 8 without patch 139094-01 * Solaris 9 without patch 125674-01 * Solaris 10 without patch 119901-03 3. Symptoms There are no predictable symptoms that would indicate these issues have been exploited to cause a Denial of Service or execute arbitrary code with the privileges of a local user. 4. Workaround The stack overflow security issues referenced in this document may be worked around by using the "noexec_user_stack" option. This can be achieved by editing the "/etc/system" file and adding the following lines: set noexec_user_stack = 1 set noexec_user_stack_log = 1 Note: A reboot will be necessary in order for this change to take effect. See system(4) for more information on modifying the "/etc/system" file. To workaround the remaining issues described in this document, do not load images from untrusted sources. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 8 with patch 139093-01 or later * Solaris 9 with patch 125673-01 or later * Solaris 10 with patch 119900-03 or later x86 Platform * Solaris 8 with patch 139094-01 or later * Solaris 9 with patch 125674-01 or later * Solaris 10 with patch 119901-03 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 2000-2008 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 iQCVAwUBSMBpCSh9+71yA2DNAQIVLgP/cX8s/kGVFns+KDyaIoXSXMZ3eF7Uv2SF 1pueRYRkh+zuoVrBM4ewNzX4KJeejJbEKi27ror2s438sR8lQbks7cme/n7xvOlg bYdm9QCAcegVNIvlIOdS+bL1UsF+lRi2G53tzg8TiaeWt5J7SuUgJImUq0Nkz32g LJaPKiopfJ0= =09Xe -----END PGP SIGNATURE-----