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A stack-based buffer overflow exists in the pop3d service of Cyrus IMAPD (cyrus-imapd) version 2.3.2, specifically when the 'popsubfolders' option is enabled in the configuration. The vulnerability resides in the pop3d_canon_user function, which fails to properly check the length of the USER command argument before copying it into a fixed-size buffer, leading to a buffer overflow. This allows remote attackers to execute arbitrary code with the privileges of the Cyrus user by sending an overly long USER command to the pop3d service.
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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-based buffer overflow vulnerability in the Cyrus IMAPD pop3d service (CVE-2006-2502). The exploit abuses the 'USER' command when the 'popsubfolders' option is enabled (a non-default configuration) to overwrite a pointer and achieve arbitrary code execution. The module is written in Ruby and leverages the Metasploit framework's payload system, allowing the attacker to inject custom shellcode. The exploit connects to the target's POP3 service on TCP port 110, sends a specially crafted 'USER' command to trigger the overflow, and attempts to execute the payload. The exploit is operational and can be used to gain privileged access on vulnerable systems. The only file present is the Metasploit module itself, and no additional resources or endpoints are included.
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