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An integer overflow exists in PHP 4.4.4 and earlier within the unserialize() function. When a long string is passed to unserialize(), the ZVAL reference counter can overflow, potentially leading to memory corruption and arbitrary code execution. This vulnerability is triggered by remote attackers supplying crafted serialized data to PHP applications that use unserialize() on untrusted input.
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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 module: 'php_unserialize_zval_cookie.rb', which exploits an integer overflow vulnerability (CVE-2007-1286) in the unserialize() function of PHP versions prior to 4.5.0. The exploit targets web applications that unserialize user-supplied data from cookies, such as phpBB2, punBB, WWWThreads, and Deadman Redirect, primarily on Linux x86 systems. The module works by sending a large number of specially crafted HTTP Cookie headers to overflow the ZVAL reference counter, allowing arbitrary code execution. The payload is delivered via the HTTP request and can be customized using Metasploit's payload system. The module includes brute-force logic to target a range of memory addresses, increasing reliability across different Linux distributions. The main attack vector is network-based, exploiting web servers over HTTP. The repository is structured as a typical Metasploit exploit module, written in Ruby, and is operational with customizable payloads.
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