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TITLE:
Netscape "navigatorurl" URI Handler Registration Vulnerability

SECUNIA ADVISORY ID:
SA26082

VERIFY ADVISORY:
http://secunia.com/advisories/26082/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Netscape 9.x
http://secunia.com/product/14690/

DESCRIPTION:
A vulnerability has been discovered in Netscape, which can be
exploited by malicious people to compromise a user's system.

The problem is that Netscape registers the "navigatorurl://" URI
handler and allows invoking Netscape with arbitrary command line
arguments. Using e.g. the "-chrome" parameter it is possible to
execute arbitrary Javascript in chrome context. This can be exploited
to execute arbitrary commands e.g. when a user visits a malicious web
site using Microsoft Internet Explorer.

This vulnerability is related to:
SA25984

The vulnerability is confirmed in version 9.0b2. Other versions may
also be affected.

SOLUTION:
Do not browse untrusted sites.

Disable the "Navigator URL" URI handler.

PROVIDED AND/OR DISCOVERED BY:
Billy (BK) Rios, Nate Mcfeters, and Raghav "the Pope" Dube

ORIGINAL ADVISORY:
http://www.xs-sniper.com/sniperscope/IE-Pwns-Firefox.html

OTHER REFERENCES:
SA25984:
http://secunia.com/advisories/25984/

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