david.vorel has reported a vulnerability in Trend Micro InterScan Web Security Suite and Trend Micro InterScan Web Security Virtual Appliance, which can be exploited by malicious people to disclose sensitive information.
The vulnerability is caused due to the application forwarding the "Proxy-Authorization" header to third-party websites when basic authorization is enabled. This can be exploited to disclose the proxy username and password by tricking a user into connecting to an external resource using e.g. Windows Media Player.
Solution: Do not browse untrusted websites or follow untrusted links.
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Subject: Trend Micro InterScan Web Security "Proxy-Authorization" Information Disclosure<
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