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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.1111 Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2859537) 13 August 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows Impact/Access: Administrator Compromise -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2013-2556 Original Bulletin: http://technet.microsoft.com/en-us/security/bulletin/ms13-063 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS13-063 - Important Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2859537) Published Date: August 13, 2013 Version: 1.0 General Information Executive Summary This security update resolves one publicly disclosed vulnerability and three privately reported vulnerabilities in Microsoft Windows. The most severe vulnerabilities could allow elevation of privilege if an attacker logged on locally and ran a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit these vulnerabilities. The vulnerabilities could not be exploited remotely or by anonymous users. This security update is rated Important for supported 32-bit editions of Windows XP, Windows Server 2003, and Windows 8; and all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. Affected Software Windows XP Service Pack 3 (2859537) Windows Server 2003 Service Pack 2 (2859537) Windows Vista Service Pack 2 (2859537) Windows Vista x64 Edition Service Pack 2 (2859537) Windows Server 2008 for 32-bit Systems Service Pack 2 (2859537) Windows Server 2008 for x64-based Systems Service Pack 2 (2859537) Windows Server 2008 for Itanium-based Systems Service Pack 2 (2859537) Windows 7 for 32-bit Systems Service Pack 1 (2859537) Windows 7 for x64-based Systems Service Pack 1 (2859537) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (2859537) Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (2859537) Windows 8 for 32-bit Systems(2859537) Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)(2859537) Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) (2859537) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) (2859537) Vulnerability Information ASLR Security Feature Bypass Vulnerability - CVE-2013-2556 A security feature vulnerability exists in Windows due to improper implementation of Address Space Layout Randomization (ASLR). The vulnerability could allow an attacker to bypass the ASLR security feature, most likely during or in the course of exploiting a remote code execution vulnerability. The attacker could then load a DLL in the process. Windows Kernel Memory Corruption Vulnerabilities Elevation of privilege vulnerabilities exist in the Windows kernel due to a memory corruption condition in the NT Virtual DOS Machine (NTVDM). An attacker who successfully exploited these vulnerabilities could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUgrFFRLndAQH1ShLAQKnAg/+Nrl/tGK2MvVsa3ECGT5Uaf77saanQHWC kEWqIvsb5Jh4y65o2MIVBL+LkQe61WoytZrX5he7WOxtiz/RW1Ld0knRdP8gPxRV EvVDp0oDQQepc5IwvwkjdeftzW7fiFNCIJ4xSt6KQdZ4Jc/ab6i+vGm6wD2k5za3 hvruojdTFQQ3n/j1QuNhBA2zYA73128JMBk8u+bWC03Fe2h/2MsMrrahnlroaDzh RLpOBsUL7B4kzzF9wcdOqQ3WKNkhKz9dVpqzOwFlCZYko2B+v0peAp/MjhbWGcU3 AcyFMQIHlLzdBWzEvEusoP4s9qbNmX5GSR3FpQ80WvAuk09UBMiWxIBNbNOJ8NOG LOiMIpKiFgH3lze/0U1IXVsjsS5e3qGCetbiXOI6Vr2Ji1hTm4tjg4sOEKCJwiB2 CfXkLrsKN5Aa3HLFrxSIvcMJOJq8vW13LtCf932ZFJjxWzo3c5Ce8YMWSELGylMd RyOCeGisX9CLN12H5gEg5ByP2tiM1UPQLuU8AWjauliu2GMUbVSdIxnKelUE/aGe hdaWUSsF5w1CwOdkLH9Wuh4jusLcVNSvpfyGsYgv8RdJQwf/ETmUiZc36//bV6DE gpN7Yu7VI2sm5gIxjjvgRdxSbGY4tzzzQf5nTMLMsOFhzFwa3+jP5BMZSCCkghdt DkbE5p4UctQ= =xppr -----END PGP SIGNATURE-----