CSIS Security Group has reported a vulnerability in BlueCoat K9 Web Protection, which can be exploited by malicious, local users to gain escalated privileges or by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error in the web-based management service (k9filter.exe) when processing URLs. This can be exploited to cause a buffer overflow via an overly long HTTP request to localhost port 2372.
Successful exploitation may allow execution of arbitrary code with SYSTEM privileges. However, a remote attack requires that a user e.g. is tricked into visiting a malicious website or otherwise follow a specially crafted link.
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Subject: Blue Coat K9 Web Protection Management Service Buffer Overflow
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