An unspecified function in the JavaScript implementation in Google Chrome creates and exposes a "temporary footprint" when there is a current login to a web site, which makes it easier for remote attackers to trick a user into acting upon a spoofed pop-up message, aka an "in-session phishing attack." NOTE: as of 20090116, the only disclosure is a vague pre-advisory with no actionable information. However, because it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes.
http://www.trusteer.com/files/In-session-phishing-advisory-2.pdf
http://www.securityfocus.com/bid/33276
http://www.darkreading.com/security/attacks/showArticle.jhtml?articleID=212900161