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Mozilla Foundation Security Advisory 2008-69

Title: XSS vulnerabilities in SessionStore
Impact: Critical
Announced: December 16, 2008
Reporter: moz_bug_r_a4
Products: Firefox

Fixed in: Firefox 3.0.5


Mozilla security researcher moz_bug_r_a4 reported vulnerabilities in the session-restore feature by which content could be injected into an incorrect document storage location, including storage locations for other domains. An attacker could utilize these issues to violate the browser's same-origin policy and perform an XSS attack while SessionStore data is being restored.

moz_bug_r_a4 also reported that one variant could be used by an attacker to run arbitrary JavaScript with chrome privileges.


Disable JavaScript or the session-restore feature until a version containing these fixes can be installed.