Manuel Santamarina Suarez has reported a vulnerability in Blue Coat WinProxy, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.
The vulnerability is caused due to an error in the handling of HTTP CONNECT requests and can be exploited to crash the service or cause a heap-based buffer overflow by sending an overly long CONNECT request to the proxy service.
Successful exploitation may allow execution of arbitrary code.
The vulnerability is reported in versions 6.1a and 6.0 r1c. Other versions may also be affected.
Solution: Update to version 6.1r1c.
Provided and/or discovered by: Discovered by Manuel Santamarina Suarez and reported via iDefense Labs.
Original Advisory: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=471
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Subject: Blue Coat WinProxy CONNECT Buffer Overflow Vulnerability
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