BugTraq
Re: Norton AntiVirus 2004 Script Blocking Failure (Includes PoC and rant) Oct 18 2004 05:24PM
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In-Reply-To: <416F7ABB.8070502 (at) myrealshoebox (dot) com [email concealed]>

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>Date: Fri, 15 Oct 2004 03:22:35 -0400

>From: Daniel Milisic <dmilisic (at) myrealshoebox (dot) com [email concealed]>

>User-Agent: Mozilla Thunderbird 0.8 (Windows/20040913)

>X-Accept-Language: en-us, en

>MIME-Version: 1.0

>To: full-disclosure (at) lists.netsys (dot) com [email concealed]

>Cc: bugtraq (at) securityfocus (dot) com [email concealed]

>Subject: Norton AntiVirus 2004 Script Blocking Failure (Includes PoC and rant)

>Content-Type: text/plain; charset=ISO-8859-1; format=flowed

>Content-Transfer-Encoding: 7bit

>

>Hi All,

>

>For the last couple of week's I've been hands-and-face into a project

>that is based heavily on .HTA apps. Basically, the VBScript embedded in

>the HTA handles the front-end for some basic console-driven tools. It

>was also designed to be very simple as to work equally well under

>95+IE5.5 to Win2003. Worked really nice... HOWEVER during the testing

>phase on various platforms, I discovered my .HTA grinds to a halt on

>machines running Norton AntiVirus 2004, thanks to the "Script Blocking"

>feature. A prompt or alert from the damn AV software was NOT something

>I wanted my users to deal with. So, I downloaded the TrialWare version

>from Symantec to take a poke at whether or not I could work around it.

>

>Here's how that went...

>

>One 25MB Download and I was all set to start testing! But wait, I

>should LiveUpdate...

>LiveUpdate, 4MB -- REBOOT #1 (*mandatory* restart)

>LiveUpdate, 3MB -- REBOOT #2 (Prompt to restart with an option to continue)

>LiveUpdate, 1MB -- REBOOT #3 (Right now I am thinking oh you have got to

>be <bleep>ing kidding me, THREE REBOOTS to get up-to-date AV installed!)

>

>Grisoft's AVG6, for comparison sake, is about 7MB in total I believe,

>and requires a single reboot. It doesn't have Script Blocking, but if

>you're thoughtless enough to click on a .vbs e-mail attachment you

>pretty much deserve what's coming to you ;)

>

>Once out of reboot hell, I fired up the NAV2004 console, an annoyingly

>tacky HTA-ish type front-end with more bling-bling than functionality.

>Over the last few years I've grown to really dislike NAV for this, and

>not just because of the aesthetics. On more than one occasion I'd see a

>virus or spyware infected PC with NAV on it (user error not NAV's

>fault); with the NAV console just a smoldering pile of script errors

>after the malicious program hosed IE's rendering engine. The NAV

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