Cyberoam iview UTM 0.1.2.7 Cross Site Scripting
Posted on 05 October 2016
Document Title: =============== Cyberoam iview UTM v0.1.2.7 - (Ajax) XSS Web Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1850 Cyberoam ID: #1059276 Security ID: NCR-2064 Release Date: ============= 2016-10-04 Vulnerability Laboratory ID (VL-ID): ==================================== 1850 Common Vulnerability Scoring System: ==================================== 3.3 Product & Service Introduction: =============================== Enterprises and MSSPs need a solution that gives them visibility into network activities and security posture from a single location. Cyberoam iView offers centralized logging and reporting of network and user activity over multiple devices across distributed locations for security events. It offers logs and reports of Cyberoam network security appliances, along with other UTMs and NGFW appliances, routers and switches. (Copy of the Vendor Homepage: https://www.cyberoam.com/cyberoamiview.html ) Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered a client-side cross site vulnerability in the official iview Cyberoam utm v0.1.2.7 appliance web-application. Vulnerability Disclosure Timeline: ================================== 2016-05-24: Researcher Notification & Coordination (Lawrence Amer - Vulnerability Laboratory) 2016-05-25: Vendor Notification (Cyberoam Security Team) 2016-09-20: Vendor Fix/Patch (Cyberoam Security Team) 2016-10-01: Acknowledgement & Bug Bounty (Cyberoam iview Developer Team) 2016-10-04: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Sophos Product: iview Cyberoam - Appliance (Web-Application) 0.1.2.7 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A client side cross site scripting web vulnerability has been discovered in the official iview Cyberoam utm v0.1.2.7 appliance web-application. The client-side web vulnerability allows remote attackers to inject own malicious script codes to client-side browser to application requests. The vulnerability is located in the module `Dashboards - Custom Dashboard - Critria`. Remote attackers and low privileged web-application user accounts are able to inject own malicious script code context in the search input for parameters [username,sourcehost,emailaddr sender, emailaddr recipent). The data of the POST method request in the Body is bypassing the input validation and executes without a secure encode. The request runs through the data type "json". The security risk of the client-side cross site vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3. Exploitation of the non-persistent input validation vulnerability requires no privileged web-application user account or a low privileged web-application user account and low user interaction. Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing attacks, non-persistent external redirects to malicious source and non-persistent manipulation of affected or connected application modules. Request Method(s) [+] POST - [json] Vulnerable Module(s): [+] AjaxController [+] Dashboard - Custom Dashboard - Critria Vulnerable Parameter(s): [+] username [+] sourcehost [+] emailaddr sender [+] emailaddr recipent Proof of Concept (PoC): ======================= The client-side web vulnerability can be exploited by remote attackers or low privileged web-application user accounts with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Manual steps to reproduce the vulnerability ... 1. Open the iview url localhost:8080/iview 2. After that, use the critria search in the following module Note: Dashboards - Custom Dashboard - (critria input) 3. Type in the search input field a java script payload 4. Successful reproduce of the vulnerability! --- PoC Session Logs [POST] --- https://iviewdemo.localhost:8080/AjaxController action: 2 json: {"width":1146,"height":320,"isSort":false,"viewAll":true,"table":"on","Graph":"on","graphLimit":10, "groupQuery":false,"originReportGroup":-1,"returnReportID":-1,"detailReport":-1,"detailReportView":false, "type":"G","filter":{"recordPerPage":5,"currentPage":1,"startDate":"2016-05-21 00:00:00","endDate": "2016-05-21 23:59:59","criteria":[],"reportCriteria":[],"limit":10000,"offset":0,"sort":{},"deviceCategory": "device","appliancelist":["1","2","3","4"]},"id":1001,"index":0,"reportGroupid":1001} - POST https://iviewdemo.localhost:8080/AjaxController Accept: application/xml, text/xml, */*; q=0.01 Origin: chrome-extension://kajfghlhfkcocafkcjlajldicbikpgnp X-Requested-With: XMLHttpRequest User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36 Cookie: JSESSIONID=AFCE7A3B7D53F363842FE2459D7EF444.ivwtomcat - HTTP/1.1 200 OK Server: Apache Connection: Keep-Alive Content-Type: text/xml;charset=UTF-8 Reference(s): https://iviewdemo.localhost:8080/ https://iviewdemo.localhost:8080/AjaxController Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure parse and encode of the vulnerable input field context. Encode all inputs and restrict the input by disallowing the usage of special chars. Parse also the outgoing values for the user notification by the appliance service itself to prevent malicious attack scenarios. Security Risk: ============== The security risk of the client-side cross site scripting web vulnerability in the cyberoam iview application is estimated as medium. (CVSS 3.3) Credits & Authors: ================== Vulnerability Laboratory [Core Research Team] - Lawrence Amer - [http://www.vulnerability-lab.com/show.php?user=Lawrence%20Amer] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 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