Two vulnerabilities have been discovered in Qbik WinGate, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerabilities are caused due to format string errors within the SMTP service logging functionality when handling unimplemented commands or commands sent in a bad sequence. This can be exploited by passing a specially crafted argument containing format string specifiers to either an unimplemented SMTP command or a command while in an invalid state.
Successful exploitation allows execution of arbitrary code.
The vulnerabilities are confirmed in version 6.2.1 and reported in versions 5.x and 6.x prior to 6.2.2.
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Subject: Qbik WinGate SMTP Service Format String Vulnerabilities
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