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DESCRIPTION:
Some vulnerabilities have been reported in Mozilla Firefox, which can
be exploited by malicious people to bypass certain security
restrictions, disclose sensitive information, conduct cross-site
scripting attacks, or potentially compromise a user's system.
1) Multiple errors in the layout engine can be exploited to corrupt
memory and potentially execute arbitrary code.
2) An error in the processing of XBL bindings can be exploited to
bypass the same-origin policy and read data from a target document in
another domain.
Successful exploitation of this vulnerability requires that the
target document contains a "<bindingsi>" element and that the "id" of
the read binding is known.
3) An error in the feed preview functionality can be exploited to
execute arbitrary JavaScript code with chrome privileges.
This is related to vulnerability #3 in:
SA31984
4) An error exists when processing "XMLHttpRequest" requests to a web
server which redirects the browser via a 302 HTTP status code. This
can be exploited to bypass the same-origin policy and disclose
sensitive information from another domain.
5) An error exists when processing JavaScript URLs redirecting the
browser to another domain returning non-JavaScript data. This can be
exploited to disclose sensitive information from the other domain via
a "window.onerror" event handler.
6) An error when processing URLs starting with whitespace or certain
control characters can be exploited to output a malformed URL when
rendering a hyperlink.
7) An error in the CSS parser when processing "\0" sequences can be
exploited to potentially bypass third party script sanitation
routines.
8) An error when processing an XBL binding attached to an unloaded
document can be exploited to bypass the same-origin policy and
execute arbitrary JavaScript code in a different domain.
9) Two errors can be exploited to pollute "XPCNativeWrappers" and
execute arbitrary JavaScript code with chrome privileges.
10) Several errors in the session restore feature can be exploited to
execute arbitrary JavaScript code in a different domain or with chrome
privileges.
The vulnerabilities are reported in versions prior to 2.0.0.19.
PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Daniel Veditz, Jesse Ruderman, and David Baron
2) Boris Zbarsky
3, 8-10) moz_bug_r_a4
4) Marius Schilder of Google Security
5) Chris Evans of Google Security
6) Chip Salzenberg, Justin Schuh, Tom Cross, and Peter William
7) Kojima Hajime
Note: This is the last planned release of Firefox 2. All users are encouraged to upgrade to Firefox 3. Firefox 2.0.0.19 does not include Phishing Protection.
Release Date:
December 16, 2008
Security Update:
The following security issues were fixed:
Fixed in Firefox 2.0.0.19
MFSA 2008-69 XSS vulnerabilities in SessionStore
MFSA 2008-68 XSS and JavaScript privilege escalation
MFSA 2008-67 Escaped null characters ignored by CSS parser
MFSA 2008-66 Errors parsing URLs with leading whitespace and control characters
MFSA 2008-65 Cross-domain data theft via script redirect error message
MFSA 2008-64 XMLHttpRequest 302 response disclosure
MFSA 2008-62 Additional XSS attack vectors in feed preview
MFSA 2008-61 Information stealing via loadBindingDocument
MFSA 2008-60 Crashes with evidence of memory corruption (rv:1.9.0.5/1.8.1.19)
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