630 : Microsoft IIS Multiple Malformed Header Field Internal IP Address Disclosure
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
32	6752	over 9 years ago	over 3 years ago	7 times	90%

Timeline

Disclosure Date	Exploit Publish Date
2000-07-13	2000-07-13

Description

Microsoft IIS contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when attempting to access an area protected via basic HTTP authentication without providing realm information, making a request without a host: header, or by trying to access a resource that has been moved (302). This may disclose the internal IP address or network name in the response header resulting in a loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Public
Disclosure: OSVDB Verified
OSVDB: Web Related

Technical

WARNING: Using the Adsutil.vbs file incorrectly causes serious problems that requires you to reinstall Internet Information Server 4.0. Microsoft cannot guarantee that problems resulting from the incorrect use of the Adsutil.vbs file can be solved. Use the Adsutil.vbs file at your own risk.

NOTE: The IP address may be disclosed in the 'Location' or 'WWW-Authenticate' header, and may be triggered by a GET or HEAD request.

Solution

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround:
Change the w3svc/UseHostName value (from False to True) in the metabase
This is done my using the adsutil.vbs ot manually change values within the metabase.

Products

Microsoft Corporation	IIS	4.0
		3.0
		2.0
		5.0
		5.1
		6.0

References

Bugtraq ID: 1499
CVE ID: 2000-0649 (see also: NVD)
ISS X-Force ID: 5106
Microsoft Knowledge Base Article: 834141 Q218180
Mail List Post: http://archives.neohapsis.com/archives/ntbugtraq/2000-q3/0025.html
Other Advisory URL: http://osvdb.org/ref/00/00630-v6.txt

Tools & Filters

	10759

Manual Testing Notes

Credit

Dougal Campbell - dougalGUNTERS.ORG -

CVSSv2 Score

CVSSv2 Base Score = 2.6
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

None found at this time

Comments

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Anonymous - 2006/04/02 23:51:13

This also effects IIS 6.

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