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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
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Contact Secunia Sales for more information:
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TITLE:
Firefox Sage Extension Feed Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA22809

VERIFY ADVISORY:
http://secunia.com/advisories/22809/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Sage 1.x (extension for Firefox)
http://secunia.com/product/11907/

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

The vulnerability is caused due to an input validation error in the
processing of "img" tags in 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 the
contents of it.

The vulnerability is confirmed in version 1.3.8. Other versions may
also be affected.

SOLUTION:
Do not add feeds from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
David Kierznowski

ORIGINAL ADVISORY:
http://michaeldaw.org/md-hacks/rss-injection-in-sage-part-2/

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About:
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vulnerabilities.

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