| Business Impact: |
This issue is a remote code execution vulnerability in Microsoft Internet Information Services 5.1. This vulnerability was first disclosed as a denial-of-service issue in 2005, and a DOS proof-of-concept has been publicly available since then. Recently, new information has come to light indicating that this vulnerability can be leveraged to obtain remote code execution. Although the exploit is difficult to reproduce, we may see public exploitation in the weeks after disclosure due to the amount of information that is already available and the novelty of the attack methodology. As web servers are critical infrastructure, IBM ISS X-Force advises administrators with vulnerable IIS servers to treat this issue with the highest priority. |
| CVSS: |
Base Score: |
8.0 |
| |
Access Vector: |
Remote |
| Access Complexity: |
High |
| Authentication: |
Not Required |
| Confidentiality Impact: |
Complete |
| Integrity Impact: |
Complete |
| Availability Impact: |
Complete |
| Impact Bias: |
Normal |
| Adjusted Temporal Score: |
5.9 |
| |
Exploitability: |
Unproven |
| Remediation Level: |
Official-Fix |
| Report Confidence: |
Confirmed |
| Affected Products: |
For a full list of affected versions, see XFDB reference below. |
| Technical Description: |
Microsoft Internet Information Services (IIS) could allow a remote attacker to execute arbitrary code on the system, caused by a memory corruption vulnerability. An attacker could exploit this vulnerability by sending specially-crafted URL requests to a Web page hosted by IIS. |
| Remediation: |
Microsoft has released a patch to remediate this issue. See References for details. |
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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.
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About IBM Security Systems
IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.
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