Microsoft Commerce Server new variant of AuthFilter ISAPI filter buffer overflow
| mscs-authfilter-isapi-bo-variant (9426) |  High Risk |
Description:
Microsoft Commerce Server is vulnerable to a buffer overflow, caused by improper bounds checking of authentication requests in the AuthFilter ISAPI (Internet Services Application Programming Interface) filter. By sending a specially-crafted authentication request to the server, a remote attacker could overflow a buffer and execute arbitrary code on the system to gain complete control over the affected server.
Note: This is a new variant of the "ISAPI Filter" vulnerability previously discussed in Microsoft Security Bulletin MS02-010. See References.
Platforms Affected:
- Microsoft, Commerce Server 2000
- Microsoft, Commerce Server 2002
- Microsoft, IIS 5.0
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-033. See References.
Note: Microsoft originally provided a patch for this vulnerability in MS02-010, but it was superseded by the patch released with MS02-033. See References.
Consequences:
Gain Access
References:
- Microsoft Security Bulletin MS02-010, Unchecked Buffer in ISAPI Filter Could Allow Commerce Server Compromise at http://www.microsoft.com/technet/security/bulletin/ms02-010.mspx.
- Microsoft Security Bulletin MS02-033, Unchecked Buffer in Profile Service Could Allow Code Execution in Commerce Server (Q322273) at http://www.microsoft.com/technet/security/bulletin/ms02-033.mspx.
- BID-5112: Microsoft Commerce Server ISAPI Buffer Overflow Variation Vulnerability
- CVE-2002-0623: Buffer overflow in AuthFilter ISAPI filter on Microsoft Commerce Server 2000 and 2002 allows remote attackers to execute arbitrary code via long authentication data, aka New Variant of the ISAPI Filter Buffer Overrun.
- OSVDB ID: 5163: Microsoft Commerce Server AuthFilter ISAPI Filter Overflow
Reported:
Jun 26, 2002
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