Medium severity

Facebook HTML and Script code injection vulnerability

Cross-Site Scripting in the Facebook mobile interface via the q parameter of friends.php.

Original release date
January 2010
Discovered by
Juan Galiana Lara
Severity
6.3 / 10 CVSS v2.0
Affected product
Facebook (mobile interface, friends.php)

Antecedentes

Facebook is a social network operated and owned by Facebook, Inc. Users can add friends, send them messages, update their profile, and join networks organized by city, workplace, school, or region.

Description

The Facebook mobile interface is vulnerable to Cross-Site Scripting because the q variable of m.facebook.com/friends.php is not properly sanitized. An attacker can inject HTML or script code into the victim's browser, perform XSS attacks, and steal their cookies.

Business impact

An attacker can execute arbitrary HTML or script code in a user's browser and, in doing so, steal their cookies.

Affected systems

Facebook.

Solución

Corrected by the manufacturer.

Calendario de divulgación

2 Jan 2010 Vulnerability discovered by Internet Security Auditors.
9 Jan 2010 Contacted the manufacturer regarding the proof of concept. No response.
11 Jan 2010 Second contact. No response.
19 Jan 2010 Third contact. No response.
20 Jan 2010 The manufacturer fixes the vulnerability without making contact.
31 Jan 2010 A member of the Facebook security team responds requesting information.
3 Feb 2010 Send to the public interest lists.

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-independent 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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