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A vulnerability in the Nullsoft Modern Skins Support module (gen_ff.dll) in Nullsoft Winamp before version 5.552 allows remote attackers to execute arbitrary code. The flaw is triggered by a crafted MAKI file, which causes an incorrect sign extension and integer overflow, leading to a stack-based buffer overflow during parsing.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (4 hidden).
This repository contains a single Metasploit module targeting a stack-based buffer overflow vulnerability (CVE-2009-1831) in Winamp 5.55's gen_ff.dll, specifically when parsing a crafted MAKI file. The exploit generates a malicious 'mcvcore.maki' file, which must be placed in the 'scripts' directory of the default 'Bento' skin or used to create a new skin. When Winamp processes this file, a buffer overflow occurs, allowing execution of arbitrary code via a user-selectable Metasploit payload (up to 4000 bytes). The exploit is weaponized, allowing for easy payload customization and integration into the Metasploit framework. The attack vector is local, requiring user interaction to install the malicious file. The module is written in Ruby and is structured according to Metasploit conventions, with clear references to the affected product, CVE, and exploitation method.
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