João Antunes has discovered a vulnerability in WinGate, which can be exploited by malicious users to cause a DoS (Denial of Service) or to potentially compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the processing of IMAP commands. This can be exploited to cause a heap-based buffer overflow by issuing an IMAP LIST command with an overly long argument.
Successful exploitation may allow execution of arbitrary code.
The vulnerability is confirmed in version 126.96.36.1997. Other versions may also be affected.
Solution: Restrict mail access to trusted users only.
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Subject: WinGate IMAP Server Buffer Overflow Vulnerability
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