Google Notebook and Google Bookmarks Cross Site ScriptingVulnerabilities

I. Background:

Google Notebook is a service where it's possible to "add text, images, and links from web pages without leaving your browser window."
Google Bookmarks is a service where it's possible to save bookmarks.

II. Description:
Three cross site scripting vulnerabilities were identified inside Google Notebook. A remote attacker can make a malformed block notes and invite, through the sharing option inside Google Notebook, other users to see it to obtain their cookie. User interaction is required to exploit all three vulnerabilies.

Browser affected: Firefox 3.
Browser not affected: Internet Explorer 7, Opera 9.5, Safari 3.

One cross site scripting vulnerability was identified inside Google Bookmarks. A remote attacker can make a malformed bookmark inside his account and then share it with other users to obtain their cookie. User interaction is required to exploit this vulnerability.

Browser affected: Mozilla Firefox 3, Internet Explorer 7, Opera 9.5, Safari 3


III. Vendor Response:
Google acknowledged 4 vulnerabilities and has deployed a fix for them.


IV. Disclosure timeline:
23/07/08 - First vulnerability discovered
23/07/08 - Google informed
24/07/08 - Google confirmed first bug
31/07/08 - Google fixed the first vulnerability
31/07/08 - Three new vulnerabilities discovered
31/07/08 - Google informed
31/07/08 - Google confirmed these three new bugs
01/08/08 - Google fixed all vulnerabilities submitted

Regards
Alfredo Melloni