Matthew Bergin has discovered a vulnerability in Microsoft Internet Information Services (IIS), which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error when encoding Telnet IAC characters in a FTP response (specifically the 0xFF character). This can be exploited without authenticating to the FTP service to cause a heap-based buffer overflow by sending an overly long, specially crafted FTP request.
Successful exploitation may allow execution of arbitrary code.
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Subject: Microsoft IIS FTP Server Telnet IAC Character Encoding Vulnerability
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