*Multiple Cross Site Scripting Attack - ManageEngine EvenLog Analyzer v.11.0 Build 11000* *Overview-----------------------------------------------------------------------------------------------------------------------------* Vendor: Manage Engine Vulnerable Product: EvenLog Analyzer v.11.0 Build 11000 Vulnerability Type : Multiple Cross Site Scripting Vulnerability Vulnerable Version : v.11.0 Build 11000 Vendor Homepage:https://www.manageengine.com/products/eventlog/download.html <https://www.manageengine.com/products/firewall/download.html> <https://www.manageengine.com/products/firewall/download.html> CVE-ID : NA Severity : High Author – Omkar Joshi Vulnerability Reported: 09/03/2016 Response From Vendor: 09/03/2016 Vendor Confirmation: 10/03/2016 Patch Released: Not yet Link: https://www.manageengine.com/products/desktop-central/cross-site-scripting-vulnerability.html *Product Description * --------------------------------------------------------------------------------------------------------------------------------- EventLog Analyzer provides the most cost-effective Security Information and Event Management (SIEM) software on the market. Using this Log Analyzer software, organizations can automate the entire process of managing terabytes of machine generated logs by collecting, analyzing, correlating, searching, reporting, and archiving from one central location. This event log analyzer software helps to monitor file integrity, conduct log forensics analysis, monitor privileged users and comply to different compliance regulatory bodies by intelligently analyzing your logs and instantly generating a variety of reports like user activity reports, historical trend reports, and more. *Proof of Concept URL * ----------------------------------------------------------------------------------------------------------------------------------- Stored XSS -> http://localhost:8400/event/index2.do?url=editAlertForm&tab=alert&NOTIFID=52&ALERT_NAME=Test&alert=profile <http://localhost:8020/scheduleReport.do?actionToCall=showScheduleReport> Reflected XSS -> http://localhost:8400/event/index2.do?url=ConfigureTemplate&tab=system&sel=13&helpP=fim&link=1 <http://localhost:8020/scheduleReport.do?actionToCall=showScheduleReport> *Credits & Authors* ------------------------------------------------------------------------------------------------------------------------------------- Omkar Joshi <http://localhost:8020/scheduleReport.do?actionToCall=showScheduleReport> *Steps to Reproduce:**Attack Scenario*: *Stored Cross Site Scripting Attack* Step 1. Login into EventLog Analyzer v11.0 Step 2: Go to Add Hosts. Step 3: Once done with adding Hosts go to Add alert Step 4: Insert XSS payload in "ToAddress" and "Subject" parameter of "Email". I have used "><img src=x onerror=prompt(document.cookie);> XSS payload Step 5: Then click on Save Alert Profile Step 6: Whenever anyone try to edit the alert XSS Script will get execute. *Attack Scenario: Reflected Cross Site Scripting Attack*Step 1. Login into EventLog Analyzer v11.0 Step 2: Go to Settings. Step 3: Click on File Monitoring and Go to Add Host Step 4: Now Click on Assign Template Step 4: Insert XSS payload in Location(s), File(s) I have used "><img src=x onerror=prompt(document.cookie)> XSS payload Step 5: Then click on Enable Settings to submit the data and Script will get execute. *Impact of attack*: An attack can perform Cross Site Scripting attack and steal the cookie of other active sessions. An attacker would exploit a vulnerability within a website or web application that the victim would visit, essentially using the vulnerable website as a vehicle to deliver a malicious script to the victim’s browser. An attacker might be able to put stored XSS into the website. https://www.owasp.org/index.php/Cross-site_Scripting_(XSS) *Recommendation*: Use an appropriate combination of white listing and blacklisting to ensure only valid and expected input is processed by the system. Furthermore, classes within the output tag libraries should also be modified to encode potentially dangerous characters with their HTML escape Counter parts. For more information refer the following link https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet