Document Title: =============== XING Network Website - Multiple Web Vulnerabilities References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=87 Release Date: ============= 2011-07-21 Vulnerability Laboratory ID (VL-ID): ==================================== 87 Product & Service Introduction: =============================== XING (named openBC/Open Business Club until 17 November 2006) is a big social software platform for enabling a small-world network for professionals. The company claims that it is used by people from over 200 countries. Available languages include English, German, Spanish, Portuguese, Italian, French, Dutch, Simplified Chinese, Finnish, Swedish, Korean, Japanese, Russian, Polish, Turkish and Hungarian. By displaying how each member is connected to any other member, it visualizes the small-world phenomenon. The platform offers personal profiles, groups, discussion forums, event coordination, and other common social community features. Basic membership is free. But many core functions, like searching for people with specific qualifications or messaging people to whom one is not already connected, can only be accessed by the premium members. Premium membership comes at a monthly fee of 5 € (around 7.50 USD). The platform uses https and has a rigid privacy and no-spam policy. Unlike many other networking websites, XING provides its paying members very easy email access to any members. XING has a special Ambassador program for each city or region around the world with a substantial constituency. The Ambassadors hold local events that promote the use of social networking as a business tool, letting members introduce business ideas to one and other, and get to know each other on a personal level. XING competes with the American platform LinkedIn and the European Viadeo for social networking among businesses. XING also offers the system for closed communities, called Enterprise groups with their own access paths and interface designs. The platform serves as the infrastructure for corporate groups, including IBM, McKinsey, Accenture and others. (Copy of the Vendor Homepage: http://en.wikipedia.org ) Abstract Advisory Information: ============================== Vulnerability-Lab Team discovered multiple persistent Web Vulnerabilities on the XING Business Network. Vulnerability Disclosure Timeline: ================================== 2010-09-00: Vendor Notification 2010-10-00: Vendor Response/Feedback 2011-01-12: Vendor Fix/Patch 2011-07-20: Public or Non-Public Disclosure Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ Multiple Input Validation Vulnerabilities are detected on Xings Business Plattform. The vulnerabilities allows a remote attackers to implement malicous persistent script codes on application-side in the profile & preview websites. Successfully exploitation can result in session hijacking or specific content manipulation(persistent) when processing user requests. Vulnerable Module(s): [+] Profile - bis heute [+] Profile Configuration [+] Profile Berufserfahrung [+] Profile - Nicht Kontakte (Public) [+] Tag Filter - Suche Picture(s): ../Xing1.png ../Xing2.png ../Xing3.png ../Xing4.png ../Xing5.png Proof of Concept (PoC): ======================= The Vulnerabilities can be exploited by remote attackers with low required user inter action. For demonstration or reproduce ... Include your own script codes on the vulnerable section input mask for user configuration. Save the data & switch back to the profile site were tehe effect got demonstrated. Vulnerable Module(s): [+] Profile - bis heute [+] Profile Configuration [+] Profile Berufserfahrung [+] Profile - Nicht Kontakte (Public) [+] Tag Filter - Suche Information: To test or verify the vulnerabilities we included a simple