Title: Mercury Mail Remote Mailbox Name Service Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
Mercury Mail is a freely available Mail Transfer Agent (MTA) server for Microsoft Windows operating systems. It acts as an SMTP, IMAP, and POP server.
Mercury Mail is prone to a remote buffer-overflow vulnerability in its mailbox name service. This issue occurs because the application fails to properly bounds-check user-supplied input before copying it to a finite-sized memory buffer.
This issue occurs when attackers send excessive data to TCP port 105, the mailbox name service port of the affected software package.
Exploiting this vulnerability allows remote attackers to execute arbitrary machine code with SYSTEM privileges in the context of the affected server process.
Mercury Mail 4.01b is affected; other versions may also be affected.
Affected Products:
- David Harris Mercury (win32 version) 4.0.0 1a
- David Harris Mercury (win32 version) 4.0.0 1b
References:
- David Harris: Mercury MTA Overview
- pmail: January 2006 - Security Patches
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