Secunia

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 6.2.2.1137. Other versions may also be affected.

Solution
Restrict mail access to trusted users only.

Provided and/or discovered by
João Antunes

Changelog
Further details available in Customer Area

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