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Apple Safari Web Browser Null Character Cookie Stealing Vulnerability

An issue has been discovered in Apple Safari, which may allow an attacker to steal cookie-based authentication credentials from a user of a vulnerable web browser. The problem is in the handling of NULL (%00) characters in URLs.

This issue may only be exploited to steal cookies set for a domain, as opposed to cookies set for a specific host in that domain. Cookies set with the secure flag can be stolen if the attacker uses SSL.