Microsoft Windows 2000 and NT 4.0 Server IIS ISAPI nsiislog.dll extension POST request buffer overflow
| win-nsiislog-post-bo (12652) |  High Risk |
Description:
Microsoft Windows 2000 Server, Advanced Server, Datacenter Server, and Windows NT Server are vulnerable to a stack-based buffer overflow in the ISAPI (Internet Services Application Programming Interface) nsiislog.dll extension of the Internet Information Services (IIS) Scripts directory. The IIS ISAPI nsiislog.dll extension, which is not installed by default, provides the multicast and unicast transmission logging capability within Microsoft Windows Media Services. If the server is configured for Windows Media Services, a remote attacker could send an overly large POST request to the server to overflow a buffer and cause IIS to stop responding to legitimate Web requests and execute arbitrary code on the system.
Note: Microsoft Windows Media Services must be downloaded to install on Windows NT 4.0 and is not installed by default on Windows 2000.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS03-022. See References.
References:
- BugTraq Mailing List, Thu Jun 26 2003 - 13:28:52 CDT: Windows Media Services Remote Command Execution #2.
- CIAC Information Bulletin N-109: Microsoft Flaw in ISAPI Extension for Windows Media Services Could Cause Code Execution.
- Microsoft Knowledge Base Article 822343: Flaw in ISAPI Extension for Windows Media Services May Cause Code Execution.
- Microsoft Security Bulletin MS03-022: Flaw in ISAPI Extension for Windows Media Services Could Cause Code Execution (822343).
- BID-8035: Microsoft Windows Media Services NSIISlog.DLL Remote Buffer Overflow Vulnerability
- BID-9878: Windows Media Services MX_STATS_LogLine NSIISlog.DLL Remote Buffer Overflow Vulnerability
- CVE-2003-0349: Buffer overflow in the streaming media component for logging multicast requests in the ISAPI for the logging capability of Microsoft Windows Media Services (nsiislog.dll), as installed in IIS 5.0, allows remote attackers to execute arbitrary code via a large POST request to nsiislog.dll.
- SA9115: Microsoft Windows Media Services Remote System Access
- SECTRACK ID: 1007059: Microsoft Windows Media Services (nsiislog.dll) Extension to Internet Information Server (IIS) Has Another Buffer Overflow That Lets Remote Execute Arbitrary Code
- US-CERT VU#113716: Microsoft Windows Media Services contains buffer overflow in nsiislog.dll
Platforms Affected:
- Microsoft Windows 2000
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Server
- Microsoft Windows NT 4.0 Server
Reported:
Jun 25, 2003
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For corrections or additions please email xforce@iss.net
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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.