Microsoft Windows srv2.sys code execution
| win-srv2sys-code-execution (53090) |  High Risk |
Description:
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by an array indexing error in the Smb2ValidateProviderCallback() function within the SRV2.SYS kernel driver when parsing SMB packets. By sending a specially-crafted Server Message Block (SMB) Negotiate Protocol Request, a remote attacker could exploit this vulnerability to dereference out-of-bounds memory to execute arbitrary code on the system or cause the system to crash.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.8 |
| Exploitability: | Proof-of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.
— OR —
Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.
References:
- IBM Internet Security Systems Protection Alert: Microsoft Windows SRV2.SYS Remote Code Execution.
- Laurent Gaffie blog: Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOL REQUEST Remote B.S.O.D..
- Microsoft Security Advisory (975497): Vulnerabilities in SMB Could Allow Remote Code Execution.
- Microsoft Security Bulletin MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517).
- Microsoft Security Bulletin MS11-048: Vulnerability in SMB Server Could Allow Denial of Service (2536275).
- Microsoft Web site: Microsoft Windows.
- Offensive Security Exploit Database [2010-08-17]: Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference (MS09-050).
- BID-36299: Microsoft Windows SMB2 '_Smb2ValidateProviderCallback()' Remote Code Execution Vulnerability
- CVE-2009-3103: Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC allows remote attackers to execute arbitrary code or cause a denial of service (system crash) via an & (ampersand) character in a Process ID High header field in a NEGOTIATE PROTOCOL REQUEST packet, which triggers an attempted dereference of an out-of-bounds memory location, aka SMBv2 Negotiation Vulnerability. NOTE: some of these details are obtained from third party information.
- SA36623: Microsoft Windows SMB Processing Array Indexing Vulnerability
- SECTRACK ID: 1022848: Windows Server Message Block NEGOTIATE PROTOCOL REQUEST Processing Flaw Lets Remote Users Execute Arbitrary Code
- US-CERT VU#135940: Windows SMB version 2 vulnerability
- VUPEN/ADV-2009-2561: Microsoft Windows SMB Request Handling Array Indexing Vulnerability
Platforms Affected:
- Microsoft Windows Server 2008 Itanium
- Microsoft Windows Server 2008 x32
- Microsoft Windows Server 2008 x64
- Microsoft Windows Server 2008 SP2 x64
- Microsoft Windows Server 2008 SP2 Itanium
- Microsoft Windows Server 2008 SP2 x32
- Microsoft Windows Vista
- Microsoft Windows Vista SP2 x64
- Microsoft Windows Vista SP2
- Microsoft Windows Vista SP1 x64
- Microsoft Windows Vista x64
- Microsoft Windows Vista SP1
Reported:
Sep 07, 2009
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.