===================================================================== CERT-Renater Note d'Information No. 2008/VULN573 _____________________________________________________________________ DATE : 10/12/2008 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running Internet Explorer. ====================================================================== KB958215 http://www.microsoft.com/technet/security/bulletin/ms08-073.mspx ______________________________________________________________________ Microsoft Security Bulletin MS08-073 - Critical Cumulative Security Update for Internet Explorer (958215) Published: December 9, 2008 Version: 1.0 General Information Executive Summary This security update resolves four privately reported vulnerabilities. The vulnerabilities could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. This security update is rated Critical for Internet Explorer 5.01 and Internet Explorer 6 Service Pack 1, running on Microsoft Windows 2000; Internet Explorer 6 running on Windows XP; and Internet Explorer 7. For Internet Explorer 6 running on Windows Server 2003, this security update is rated Moderate. For more information, see the subsection, Affected and Non-Affected Software, in this section. The security update addresses these vulnerabilities by modifying the way that Internet Explorer validates parameters, handles the error resulting in the exploitable condition, and handles extra data when embedding objects in Web pages. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection under the next section, Vulnerability Information. Recommendation. Microsoft recommends that customers apply the update immediately. Known Issues. None Affected Software Internet Explorer 5.01 Microsoft Internet Explorer 6 Microsoft Internet Explorer 6 Service Pack 1 Windows Internet Explorer 7 Microsoft Internet Explorer 5.01 Service Pack 4 Microsoft Windows 2000 Service Pack 4 Windows XP Service Pack 2 and Windows XP Service Pack 3 Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Windows Vista and Windows Vista Service Pack 1 Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1 Windows Server 2008 for 32-bit Systems* Windows Server 2008 for x64-based Systems* Windows Server 2008 for Itanium-based Systems * Windows Server 2008 server core installation not affected. The vulnerabilities addressed by this update do not affect supported editions of Windows Server 2008 if Windows Server 2008 was installed using the Server Core installation option. Vulnerability Information Parameter Validation Memory Corruption Vulnerability - CVE-2008-4258 A remote code execution vulnerability exists in the way Internet Explorer handles certain navigation methods. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. HTML Objects Memory Corruption Vulnerability - CVE-2008-4259 A remote code execution vulnerability exists in Internet Explorer due to attempts to access uninitialized memory in certain situations. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. Uninitialized Memory Corruption Vulnerability CVE-2008-4260 A remote code execution vulnerability exists in the way Internet Explorer accesses an object that has been deleted. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. HTML Rendering Memory Corruption Vulnerability - CVE-2008-4261 A remote code execution vulnerability exists in the way Internet Explorer embeds objects into a Web page. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged on user. ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================