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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0169 Vulnerabilities in .NET Framework and Microsoft Silverlight Could Allow Remote Code Execution 15 February 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft .NET Framework Microsoft Silverlight Publisher: Microsoft Operating System: Windows Mac OS X Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2012-0015 CVE-2012-0014 Original Bulletin: http://technet.microsoft.com/en-us/security/bulletin/ms12-016 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS12-016 - Critical Vulnerabilities in .NET Framework and Microsoft Silverlight Could Allow Remote Code Execution (2651026) Published Date: February 14, 2012 Version: 1.0 General Information Executive Summary This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft .NET Framework and Microsoft Silverlight. The vulnerabilities could allow remote code execution on a client system if a user views a specially crafted web page using a web browser that can run XAML Browser Applications (XBAPs) or Silverlight applications. 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 Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5.1, and Microsoft .NET Framework 4 on all supported editions of Microsoft Windows; and for Microsoft Silverlight 4. For more information, see the subsection, Affected Software, in this section. Affected Software Microsoft .NET Framework 2.0 Service Pack 2 Microsoft .NET Framework 4 [1] Microsoft .NET Framework 3.5.1 Microsoft Silverlight 4 [1].NET Framework 4 and .NET Framework 4 Client Profile affected. The .NET Framework version 4 redistributable packages are available in two profiles: .NET Framework 4 and .NET Framework 4 Client Profile. .NET Framework 4 Client Profile is a subset of .NET Framework 4. The vulnerability addressed in this update affects both .NET Framework 4 and .NET Framework 4 Client Profile. For more information, see the MSDN article, Installing the .NET Framework. Vulnerability Information .NET Framework Unmanaged Objects Vulnerability - CVE-2012-0014 A remote code execution vulnerability exists in Microsoft .NET Framework and Silverlight that can allow a specially crafted Microsoft .NET Framework application to access memory in an unsafe manner. An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the logged-on user. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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. .NET Framework Heap Corruption Vulnerability - CVE-2012-0015 A remote code execution vulnerability exists in Microsoft .NET Framework due to it improperly calculating a buffer length while processing specially crafted input. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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. - --------------------------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 =========================================================================== 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). 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