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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0125 Vulnerabilities in SMB Client Could Allow Remote Code Execution 10 February 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows SMB Client Publisher: Microsoft Operating System: Windows XP Windows Vista Windows Server 2008 Windows Server 2003 Windows 2000 Windows 7 Impact/Access: Administrator Compromise -- Remote/Unauthenticated Increased Privileges -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2010-0017 CVE-2010-0016 Original Bulletin: http://www.microsoft.com/technet/security/Bulletin/MS10-006.mspx - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS10-006 - Critical Vulnerabilities in SMB Client Could Allow Remote Code Execution (978251) Published: February 09, 2010 Version: 1.0 General Information Executive Summary This security update resolves two privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if an attacker sent a specially crafted SMB response to a client-initiated SMB request. To exploit these vulnerabilities, an attacker must convince the user to initiate an SMB connection to a malicious SMB server. This security update is rated Critical for Microsoft Windows 2000, Windows XP, Windows Server 2003, Windows 7, and Windows Server 2008 R2, and is rated Important for Windows Vista and Windows Server 2008. The security update addresses the vulnerabilities by correcting the manner in which the SMB client validates responses. Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service. Known Issues. None Affected Software Microsoft Windows 2000 Service Pack 4 Windows XP Service Pack 2 and Windows XP Service Pack 3 Windows XP Professional x64 Edition Service Pack 2 Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition Service Pack 2 Windows Server 2003 with SP2 for Itanium-based Systems Windows Vista and Windows Vista Service Pack 1 Windows Vista Service Pack 2 Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1 Windows Vista x64 Edition Service Pack 2 Windows Server 2008 for 32-bit Systems Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for Itanium-based Systems Windows Server 2008 for Itanium-based Systems Service Pack 2 Windows 7 for 32-bit Systems Windows 7 for x64-based Systems Windows Server 2008 R2 for x64-based Systems Windows Server 2008 R2 for Itanium-based Systems Vulnerability Information SMB Client Pool Corruption Vulnerability - CVE-2010-0016 An unauthenticated remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB responses. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted SMB response to a client-initiated SMB request. An attacker who successfully exploited this vulnerability could take complete control of the system. SMB Client Race Condition Vulnerability - CVE-2010-0017 An unauthenticated remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB packets. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted SMB response to client-initiated SMB request. An attacker who successfully exploited this vulnerability could take complete control of the system. On Windows Vista and Windows Server 2008, this vulnerability could result in an elevation of privilege vulnerability due to the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB negotiate responses. An attacker who successfully exploited this vulnerability could run arbitrary code with system-level privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have valid logon credentials and be able to log on locally to elevate privileges in this manner. This vulnerability could also result in a denial of service. An attempt to exploit the vulnerability in this manner would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted SMB response to a client-initiated SMB request. An attacker who successfully exploited this vulnerability could cause the computer to stop responding until restarted. - --------------------------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 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 iD8DBQFLceqe/iFOrG6YcBERAp3UAJ95gXqFhhl6uIGatWbAPudiDCEuJwCfRS3f KkPktnzT7hrA71gTCb3qO5U= =rHcQ -----END PGP SIGNATURE-----