Microsoft Windows Schannel code execution
| win-schannel-code-execution (34636) |  High Risk |
Description:
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by improper validation of server-sent digital signatures in the Secure Channel (Schannel) security package. An attacker could exploit this vulnerability by creating a specially-crafted Web page and persuading the victim to visit the page.
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.9 |
| Exploitability: | Unproven |
| 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 The original bulletin issued by Microsoft has been superceded.
References:
- BugTraq Mailing List, Tue Jun 12 2007 - 13:58:24 CDT: Windows Oday release.
- Microsoft Security Bulletin MS07-031: Vulnerability in the Windows Schannel Security Package Could Allow Remote Code Execution (935840).
- Microsoft Security Bulletin MS09-007: Vulnerability in SChannel Could Allow Spoofing (KB960225).
- ASA-2007-259: MS07-031 Vulnerability in the Windows Schannel Security Package Could Allow Remote Code Execution (935840)
- BID-24416: Microsoft Windows SChannel Security Remote Code Execution Vulnerability
- CVE-2007-2218: Unspecified vulnerability in the Windows Schannel Security Package for Microsoft Windows 2000 SP4, XP SP2, and Server 2003 SP1 and SP2, allows remote servers to execute arbitrary code or cause a denial of service via crafted digital signatures that are processed during an SSL handshake.
- SA25620: Windows Secure Channel Digital Signature Parsing Vulnerability
- SECTRACK ID: 1018226: Windows Schannel Digital Signature Bug Lets Remote Users Execute Arbitrary Code
- US-CERT VU#810073: Microsoft Windows Secure Channel integer underflow
- VUPEN/ADV-2007-2151: Microsoft Windows Schannel Security Package Remote Code Execution (MS07-031)
Platforms Affected:
- Microsoft Windows 2000 SP4
- Microsoft Windows 2003 Server SP1
- Microsoft Windows 2003 Server SP1 x64
- Microsoft Windows 2003 Server SP1 Itanium
- Microsoft Windows Server 2003 SP2 x64
- Microsoft Windows Server 2003 SP2
- Microsoft Windows Server 2003 SP2 Itanium
- Microsoft Windows XP SP2 x64 Professional
- Microsoft Windows XP SP2
- Microsoft Windows XP x64 Professional
Reported:
Jun 12, 2007
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* 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.