A vulnerability has been found in ActiveXperts ActiveWebserver (Web Server) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component Link Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in ActiveXperts Software ActiveWebserver allows remote attackers to execute arbitrary web script via a link.

The weakness was released 12/31/2002 (Website). It is possible to read the advisory at securiteam.com. This vulnerability is known as CVE-2002-2189 since 11/16/2005. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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 (9540).

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• Web Server

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• ActiveXperts

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• ActiveWebserver

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