Microsoft IIS 5.0 Application Firewall cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Microsoft IIS 5.0. This affects an unknown function of the component Application Firewall. The manipulation leads to cross site scripting. This vulnerability is traded as CVE-2005-2089. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Microsoft IIS 5.0 (Web Server). It has been rated as problematic. This issue affects an unknown functionality of the component Application Firewall. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is integrity. The summary by CVE is:

Microsoft IIS 5.0 and 6.0 allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes IIS to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."

The issue has been introduced in 02/17/2000. The weakness was shared 07/05/2005 (Website). The advisory is shared at watchfire.com. The identification of this vulnerability is CVE-2005-2089 since 06/30/2005. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/13/2019). MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1965 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (42899). The entries VDB-1652, VDB-25654, VDB-25653 and VDB-25652 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Web Server

Vendor

• Microsoft

Name

• IIS

Version

• 5.0

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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