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CVE-2007-4440 is a stack-based buffer overflow in the MercuryS SMTP server of Mercury Mail Transport System, possibly version 4.51 and earlier. Processing an overly long AUTH CRAM-MD5 string can overflow a stack buffer, allowing a remote attacker to execute arbitrary code. The issue may overlap with CVE-2006-5961.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository contains a single Metasploit exploit module targeting a stack buffer overflow vulnerability in Mercury Mail Transport System version 4.51's SMTP service (CVE-2007-4440). The exploit connects to the target's SMTP service on TCP port 25 and abuses the AUTH CRAM-MD5 command to send a specially crafted, base64-encoded buffer that overflows the stack and allows execution of arbitrary code. The module supports customizable payloads (up to 600 bytes, with specific bad characters avoided) and is operational, providing remote code execution if successful. The exploit is written in Ruby and is structured as a standard Metasploit module, making it easy to use within the Metasploit framework. The only fingerprintable endpoint is the SMTP service on TCP port 25 of the target running Mercury Mail 4.51.
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