Mozilla Foundation Security Advisory 2008-64
XMLHttpRequest 302 response disclosure
- Announced
- December 16, 2008
- Reporter
- Marius Schilder
- Impact
- Moderate
- Products
- Firefox, SeaMonkey, Thunderbird
- Fixed in
-
- Firefox 2.0.0.19
- Firefox 3.0.5
- SeaMonkey 1.1.14
- Thunderbird 2.0.0.19
Description
Marius Schilder of Google Security reported that
when a XMLHttpRequest is made to a same-origin resource
which 302 redirects to a resource in a different domain, the response
from the cross-domain resource is readable by the site issuing the
XHR. Cookies marked HttpOnly were not readable, but
other potentially sensitive data could be revealed in the XHR response
including URL parameters and content in the response body.
Thunderbird shares the browser engine with Firefox and could be vulnerable if JavaScript were to be enabled in mail. This is not the default setting and we strongly discourage users from running JavaScript in mail.
Workaround
Disable JavaScript until a version containing these fixes can be installed.