CWE-79 Medium severity

Persistent Cross-Site Scripting vulnerability in LinkedIn

Persistent XSS vulnerability in the LinkedIn connection tag management system.

Original release date
March 2013
Discovered by
Eduardo Garcia Melia
Severity
5.2 / 10 CVSS v2.0
Affected product
LinkedIn (www.linkedin.com)

Antecedentes

LinkedIn operates the world's largest professional network on the Internet, with more than 187 million members in over 200 countries and territories.

Description

Stored XSS vulnerability in LinkedIn's tag management system. Malicious scripts injected into connection tags are saved permanently and displayed to other users without proper HTML escaping.

Business impact

Successful exploitation could allow attackers to force users to perform unintended actions within the application, including adding unauthorized connections or deleting profiles.

Systems affected

www.linkedin.com and touch.www.linkedin.com

Solución

LinkedIn implemented a new contact management system that fixes the vulnerability.

Calendario de divulgación

Mar 03, 2013 Vulnerability acquired by Internet Security Auditors.
Mar 10, 2013 Notification to the security team.
July 04, 2013 Initial vendor notification.
Jul 09, 2013 Vendor implemented the fix.
Nov 11, 2013 Public disclosure.

References

Sobre Internet Security Auditors

Company based in Spain and Colombia, specializing in web application auditing, network security, penetration testing, and compliance implementation and assessment. Our clients include some of the largest finance, telecommunications, insurance, and ICT companies. A vendor-neutral provider with in-depth experience since 2001. Our R&D efforts include vulnerability research, collaboration on open security projects, whitepapers, and participation in industry events.

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