Microsoft IIS FTP session status request denial of service
| iis-ftp-session-status-dos (8801) |  Medium Risk |
Description:
Microsoft Internet Information Server (IIS) is vulnerable to a denial of service attack, caused by an error in the handling of FTP session status requests. If a remote attacker with an existing FTP session sends a malformed FTP session status request, an access violation error could occur that would cause the termination of FTP and Web services on the affected server.
Consequences:
Denial of Service
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-062. See References.
Microsoft originally provided a patch for this vulnerability in MS02-018, but it was superseded by the patch released with MS02-062, and then superseded by the patch released with MS03-018. See References.
Note: This vulnerability also affects several Cisco products that use IIS. For affected products and upgrade or patch information, refer to Cisco Security Advisory: Microsoft IIS Vulnerabilities in Cisco Products - MS02-018. See References.
References:
- BugTraq Mailing List, Tue Apr 16 2002 - 20:33:36 CDT: Microsoft FTP Service STAT Globbing DoS.
- CERT Advisory CA-2002-09: Multiple Vulnerabilities in Microsoft IIS.
- CIAC Information Bulletin M-066: Microsoft Cumulative Patch for Internet Information Services (IIS) Vulnerabilities.
- Cisco Systems Inc. Security Advisory, 2002 April 15 18:00 (UTC -0400): Microsoft IIS Vulnerabilities in Cisco Products - MS02-018.
- Internet Security Systems Security Alert #114: Multiple Remote Vulnerabilities in Microsoft IIS.
- Microsoft Knowledge Base Article 317196: MS02-018: Patch Available for Denial of Service Through FTP Status Request Vulnerability.
- Microsoft Knowledge Base Article 319733: MS02-018: April 2002 Cumulative Patch for Internet Information Services.
- Microsoft Security Bulletin MS02-018: Cumulative Patch for Internet Information Services (Q319733).
- Microsoft Security Bulletin MS02-062: Cumulative Patch for Internet Information Service (Q327696).
- Microsoft Security Bulletin MS03-018: Cumulative Patch for Internet Information Service (811114).
- National Infrastructure Protection Center Advisory 02-002: Multiple Remote Vulnerabilities in Microsoft's Internet Information Services (IIS).
- BID-4482: Microsoft IIS FTP Connection Status Request Denial of Service Vulnerability
- CVE-2002-0073: The FTP service in Internet Information Server (IIS) 4.0, 5.0 and 5.1 allows attackers who have established an FTP session to cause a denial of service via a specially crafted status request containing glob characters.
- OSVDB ID: 3328: Microsoft IIS FTP Status Request DoS
- US-CERT VU#412203: Microsoft Internet Information Server (IIS) vulnerable to DoS via malformed FTP connection status request
Platforms Affected:
- Microsoft Internet Information Server 4.0
- Microsoft Internet Information Server 5.0
- Microsoft Internet Information Server 5.1
Reported:
Apr 10, 2002
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