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TITLE:
Update Scanner Extension for Firefox Code Execution Vulnerability

SECUNIA ADVISORY ID:
SA36321

VERIFY ADVISORY:
http://secunia.com/advisories/36321/

DESCRIPTION:
A vulnerability has been reported in the Update Scanner extension for
Firefox, which can be exploited by malicious people to compromise a
user's system.

Input passed via a web page is not properly sanitised before being
rendered in "chrome:" context
(chrome://updatescan/content/diffPage.xul). This can be exploited to
inject and execute arbitrary Javascript code in "chrome:" context.

Successful exploitation requires that a user monitors a web page that
is controlled by an attacker.

The vulnerability is confirmed in version 3.0.3

SOLUTION:
Update to version 3.0.4.

PROVIDED AND/OR DISCOVERED BY:
Roberto Suggi Liverani, Security-Assessment.com

ORIGINAL ADVISORY:
Update Scanner:
https://addons.mozilla.org/en-US/firefox/addons/versions/3362#version-3.0.4

Security-Assessment.com:
http://www.security-assessment.com/files/advisories/Update_Scanner_Firefox_Extension_Security_Advisory.pdf

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About:
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Definitions: (Criticality, Where etc.)
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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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