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TITLE:
Fizzle Extension for Firefox Feed Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA24654

VERIFY ADVISORY:
http://secunia.com/advisories/24654/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Fizzle 0.x (extension for Firefox)
http://secunia.com/product/13777/

DESCRIPTION:
CrYpTiC MauleR has discovered a vulnerability in the Fizzle extension
for Firefox, which can be exploited by malicious people to conduct
script insertion attacks.

The vulnerability is caused due to input validation errors in the
processing of RSS feeds. This can e.g. be exploited to insert and
execute arbitrary HTML and script code in a local context by tricking
a user into adding a malicious feed and then viewing its contents.

The vulnerability is confirmed in version 0.5. Other versions may
also be affected.

SOLUTION:
Do not subscribe to untrusted XML feeds.

PROVIDED AND/OR DISCOVERED BY:
CrYpTiC MauleR

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