Microsoft IIS FTP session status request denial of service
| iis-ftp-session-status-dos (8801) |  Low 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.
Platforms Affected:
- Microsoft, IIS 4.0
- Microsoft, IIS 5.0
- Microsoft, IIS 5.1
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Microsoft originally provided a patch for this vulnerability in MS02-018, but it was superseded by the patch released with MS02-062, and then superseded by the patch released with MS03-018.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.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Tue Apr 16 2002 - 20:33:36 CDT, Microsoft FTP Service STAT Globbing DoS at http://archives.neohapsis.com/archives/bugtraq/2002-04/0185.html.
- CERT Advisory CA-2002-09, Multiple Vulnerabilities in Microsoft IIS at http://www.cert.org/advisories/CA-2002-09.html.
- CIAC Information Bulletin M-066, Microsoft Cumulative Patch for Internet Information Services (IIS) Vulnerabilities at http://www.ciac.org/ciac/bulletins/m-066.shtml.
- Cisco Systems Inc. Security Advisory, 2002 April 15 18:00 (UTC -0400), Microsoft IIS Vulnerabilities in Cisco Products - MS02-018 at http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml.
- Internet Security Systems Security Alert #114, Multiple Remote Vulnerabilities in Microsoft IIS at http://www.iss.net/xforce/alerts/id/advise114.
- Microsoft Knowledge Base Article 317196, MS02-018: Patch Available for Denial of Service Through FTP Status Request Vulnerability at http://support.microsoft.com/default.aspx?scid=kb;[LN];317196.
- Microsoft Knowledge Base Article 319733, MS02-018: April 2002 Cumulative Patch for Internet Information Services at http://support.microsoft.com/default.aspx?scid=kb;[LN];319733.
- Microsoft Security Bulletin MS02-018, Cumulative Patch for Internet Information Services (Q319733) at http://www.microsoft.com/technet/security/bulletin/ms02-018.mspx.
- Microsoft Security Bulletin MS02-062, Cumulative Patch for Internet Information Service (Q327696) at http://www.microsoft.com/technet/security/Bulletin/MS02-062.mspx.
- Microsoft Security Bulletin MS03-018, Cumulative Patch for Internet Information Service (811114) at http://www.microsoft.com/technet/security/bulletin/ms03-018.mspx.
- National Infrastructure Protection Center Advisory 02-002, Multiple Remote Vulnerabilities in Microsoft's Internet Information Services (IIS) at http://www.nipc.gov/warnings/advisories/2002/02-002.htm.
- 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
Reported:
Apr 10, 2002
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