Description: A security issue has been reported in Microsoft's Web Proxy Auto-Discovery (WPAD) feature, which can be exploited by malicious people to conduct man-in-the-middle (MITM) attacks.
The problem is that the WPAD feature resolves "wpad" hostnames up to the second-level domain, which is potentially untrusted. This can be exploited to conduct man-in-the-middle attacks against third-level or deeper domains.
Successful exploitation requires e.g. that the system has a primary DNS suffix configured (please see the vendor's advisory for details and other mitigating factors).
Solution: The vendor has provided various workarounds. Please see the vendor's advisory for details.
Provided and/or discovered by: The vendor credits Beau Butler.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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