ISS Coverage |
| Product |
Content Version |
Network Sensor 7.0
Proventia A
Proventia IPS (G/GX)
Server Sensor 7.0
Proventia Multifunction Appliance
Proventia Server (Linux) |
any version released
after June 6, 2002 |
Proventia Server (Windows)
Proventia Desktop |
any version released
after June 6, 2002 |
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Detailed Description |
| Business Impact: |
This issue affects older versions (5.0, 5.1 and 6.0) of Microsoft Internet Information Services when the FTPd service is installed and enabled (neither Windows XP nor Windows Server 2003 install it by default).
Vulnerabilities affecting web servers are becoming increasingly lucrative targets for attackers. In addition to compromising the targeted web server, these attacks are used to plant other exploits, malware, or redirects to malicious web servers essentially turning a trusted domain into an attack center for the true target: endpoints (the customers and employees that use the target website).
Patches were not available at the time of publication. They were released on October 13, 2009. Customers that have this service installed or enabled should also deploy protection as described in the ISS Coverage section as soon as possible. |
| *CVSS: |
Base Score: |
9.0 |
| |
Access Vector: |
Network |
| Access Complexity: |
Low |
| Authentication: |
Single |
| Confidentiality Impact: |
Complete |
| Integrity Impact: |
Complete |
| Availability Impact: |
Complete |
| Impact Bias: |
Normal |
| Adjusted Temporal Score: |
7.4 |
| |
Exploitability: |
Functional |
| Remediation Level: |
Unavailable |
| Report Confidence: |
Confirmed |
| Affected Products: |
For a full list of affected versions, see XFDB reference below. |
| Technical Description: |
Microsoft Internet Information Services (IIS) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the FTPd service. By sending an overly long NLST command, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the application to crash. |
| Remediation: |
Patches were made available on October 13, 2009. See References for details. |
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References |
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Revision History |
| 1.0 |
Initial publication. |
| 1.1 |
Clarified that on 6.0, the issue only results in a DoS and not remote code execution. |
| 1.2 |
Microsoft released a patch, so updated References, Remediation, CVSS, and Business Impact sections. |
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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.
About IBM Internet Security Systems
IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia® integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force® research and development team an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.
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