Universal XSS Vulnerability in all Google Services can compromise your personal information
May 8th, 2009
Vulnerability Reported: 04/18/2009 9.33 pm
Google=92s Response: 04/18/2009 10.19 pm (Wow! that was super fast for Saturday :))
Vulnerability Fixed: 05/05/2009 7.05 pm
Change Propogated: 05/07/2009 3.19 pm
Your Google.com domain cookie is the central Single Sign-On cookie to all google services. Once anyone gets it, he or she can use it to
1. Steal your emails.
2. Steal your contacts.
3. Steal your documents.
4. Steal your code.
5. Steal your sites.
6. Steal your website analytics.
7. Backdoor your iGoogle Homepage with malicious gadgets.
=85. and there should be still some more things remaining that you can play with.
Simple Proof of Concept Code that displays your Google.com cookie in an alert box:-
More real-world example where an attacker will silently transfer your Google.com cookie to his or her evil site:-
I would like thank the Google Security Team for their prompt responses and fixing this serious issue in a timely manner. If you think Google took a long time in fixing this vulnerability, think again. This python script is used in a lot of places. Try this Google Dork to see the usage of this script in almost all Google Services.