3326 : Microsoft IIS URL Access Violation DoS
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Info

Last Modified

5 months ago

Percent Complete

90%

Disclosure

Apr 10, 2002

Discovery

Apr 10, 2002

Dates

Exploit

Apr 10, 2002

Solution

Unknown

Description

IIS contains a flaw that may allow a remote denial of service. The issue is caused by an ISAPI filter which generates an error upon receiving a URL request that is too large. Exploitation of this vulnerability will result in loss of availability for the IIS service.

Classification

Location: Remote/Network Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Technical

The only known filter that exhibits this flaw is contained within FrontPage Server Extensions and ASP.NET.

Solution

Install Patch Q319733, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workarounds:

1. Disable ASP.NET which is not installed by default.

2. Uninstall FrontPage Server Extensions.

Products

Microsoft Corporation
Watch-list
IIS
Watch-list
4.0
5.0
5.1

References

Tools & Filters

Nikto

325 326 485 3373

Nessus

10937

Credit

Unknown or Incomplete

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None found at this time

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