Document Title: =============== ifixit Bug Bounty #6 -(Profile) Persistent Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1701 Video: http://www.vulnerability-lab.com/get_content.php?id=1702 Release Date: ============= 2016-02-18 Vulnerability Laboratory ID (VL-ID): ==================================== 1701 Common Vulnerability Scoring System: ==================================== 3.6 Product & Service Introduction: =============================== The free repair guide for everything, written by everyone. iFixit is a private company in San Luis Obispo, California. Founded in 2003 while the founders were attending Cal Poly, the company sells repair parts and publishes free wiki-like online repair guides for consumer electronics and gadgets on its web site. (Copy of the Vendor Homepage: https://www.ifixit.com/ ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Core Research Team discovered an application-side input validation web vulnerability in the official ifixit online service web-application. Vulnerability Disclosure Timeline: ================================== 2015-12-25: Researcher Notification & Coordination (Hadji Samir) 2015-12-26: Vendor Notification (iFixIt Security Team) 2016-01-06: Vendor Response/Feedback (iFixIt Security Team) 2016-02-05: Vendor Fix/Patch (iFixIt Developer Team) 2016-02-16: Security Acknowledgements (iFixIt Security Team) 2016-02-18: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== iFixit Product: iFixit PRO - Online Service (Web-Application) 2016 Q1 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A persistent input validation web vulnerability has been discovered in the official ifixit online service web-application. The vulnerability allows remote attackers to inject own malicious script codes to the application-side of the affected modules context. The vulnerability is located in the additional information input field of the `my profile > about me` web-application module. Remote attackers with low privileged web-application user accounts are able to inject own script codes to the application-side of the vulnerable modules context. The attack vector is located on the application-side and the request method to inject is POST. The security risk of the filter bypass and persistent validation vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.6. Exploitation of the persistent input validation web vulnerability requires a low privileged web-application user account and low or medium user interaction. Successful exploitation of the vulnerability results in session hijacking, persistent phishing, persistent external redirects to malicious source and persistent manipulation of affected or connected application modules. Request Method(s): [+] POST Vulnerable Module(s): [+] my profile > about me Vulnerable Input(s): [+] additional information Affected Module(s): [+] my profile Proof of Concept (PoC): ======================= The vulnerability can be exploited by remote attackers with low privileged web-application user account and 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 my profile > About me > Additional Information 2. Write in the Additional Information input field your own script code payload 3. Save the entry 4. revisit the my profile page 5. Successful reproduce of the vulnerability! PoC: [image|100|caption=|link=javascript:alert(document.cookie)] Security Risk: ============== The security risk of the persistent input validation web vulnerability in the my profile section of the application is estimated as medium. (CVSS 3.6) Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Hadji Samir (samir@evolution-sec.com) [http://www.vulnerability-lab.com/show.php?user=Hadji%20Samir] 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. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. 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