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[ISN] Security UPDATE--Combined Attack Methods--June 30, 2004
From: InfoSec News (isnc4i.org)
Date: Thu Jul 01 2004 - 06:31:39 CDT
==== This Issue Sponsored By ====
Windows & .NET Magazine
10 Things Hackers Don't Want You To Know
1. In Focus: Combined Attack Methods
2. Security News and Features
- Recent Security Vulnerabilities
- News: Vulnerable IIS Sites and IE Users Under Attack
- News: AOL Engineer Charged with Selling Screen Names to Spammer
- News: MasterCard and NameProtect Team to Stop Phishing
3. Instant Poll
4. Security Toolkit
- Featured Thread
5. New and Improved
- Monitoring Software Bundle Reduces Prices
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==== 1. In Focus: Combined Attack Methods ====
by Mark Joseph Edwards, News Editor, mark at ntsecurity dot net
The June 16 Security UPDATE includes a link to the news story "New IE
Flaws Might Allow Code Injection," which describes a relatively new
attack method being used by both intruders and purveyors of suspicious
or malicious software to infest systems that use Microsoft Internet
iframes, PHP, and timing techniques to gain access to the trusted
intranet zone on a user's system. According to Kuperus, the exploit
also "uses several known vulnerabilities and two previously unknown
vulnerabilities." One of the vulnerabilities, for which no patch
exists, involves ActiveX Data Objects (ADO).
Through this attack method that uses multiple vulnerabilities, many
people's systems (possibly even the systems of some of you readers)
have become infected with various sorts of software, most of which is
annoying, if not outright dangerous. For example, nefarious entities
have installed adware that generates an endless stream of pop-up
windows on users' systems. That's the lighter side of the problem
As you can learn by reading the news story "Vulnerable IIS Sites and
IE Users Under Attack" below, yet another factor was added to the mix
last week, this time involving Microsoft IIS. Using the IIS
vulnerability described in Microsoft Security Bulletin MS04-011
(Security Update for Microsoft Windows) on systems that haven't yet
been updated with a patch that's been available since mid-April,
to get IE to download Trojan horse software onto an unsuspecting
user's systems. The Trojan horse program then gathers ("phishes")
log-on and financial information.
So now instead of intruders having to establish their own Web sites to
systems around the Internet that host legitimate Web sites. As Bugtraq
mailing list moderator David Amhad points out in a June 25 posting,
these combined vulnerabilities have "no dependence on version or
memory layout or any other such messy factors, firewalls are totally
irrelevant and VPNs become basically a free ride in, [and] the browser
doesn't end up crashing (i.e., the victim remains blissfully unaware
that they've been owned)." These combined vulnerabilities have the
potential to become devastating.
Some preventive steps are obvious, and some aren't so obvious,
depending on the user or administrator. Obviously, loading the IIS
patch MS04-011 on your servers will stop intruders from manipulating
the servers' Web pages into hosting malicious code. Turning off
scripting in the IE security zones will also protect users to a
certain extent. But in countless scenarios, turning scripting off just
isn't possible. And sometimes scripting is essential to a Web site's
usability. Many of you probably already know how to improve security
in IE, but in case you don't, Microsoft has some recommendations that
you can read at the following URL:
One workaround if you can't turn off scripting is to disable ADO
databases (ADODB) in IE. Drew Copley of eEye Digital Security wrote a
simple registry script that does this very thing and one that undoes
the changes. He also wrote an executable program that disables and
re-enables ADODB. You can download the scripts and executable program
at the eEye Web site.
Another way of protecting IE systems against ADODB attacks is to use
PivX Solutions' Qwik-Fix, which protects IE against a variety of
intrusion methods. Recently, the company made available a version of
Qwik-Fix for enterprise environments. I don't know of any other tool
that provides the same sort of functionality.
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==== 2. Security News and Features ====
Recent Security Vulnerabilities
If you subscribe to this newsletter, you also receive Security
Alerts, which inform you about recently discovered security
vulnerabilities. You can also find information about these discoveries
News: Vulnerable IIS Sites and IE Users Under Attack
A new form of attack is spreading over the Internet. The attack
affects unpatched Microsoft IIS systems, which then attack unprotected
Microsoft Internet Explorer (IE) systems.
News: AOL Engineer Charged with Selling Screen Names to Spammer
Jason Smathers, an America Online (AOL) engineer, has been arrested
and charged with stealing tens of millions of AOL screen names (email
addresses) and selling them. Sean Dunaway, who purchased the addresses
from Smathers, has also been charged. He is accused of sending spam to
AOL customers and selling the list of AOL screen names to other
News: MasterCard and NameProtect Team to Stop Phishing
MasterCard International and NameProtect announced a partnership in
which NameProtect will provide its services to MasterCard to help stop
phishing scams and illegal credit card use.
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==== 3. Instant Poll ====
Results of Previous Poll
The voting has closed in the Windows & .NET Magazine Network
Security Web page nonscientific Instant Poll for the question, "Where
are your wireless Access Points (APs)?" Here are the results from the
- 42% Inside the border firewall
- 24% Outside the border firewall
- 34% Between the border firewall and an internal firewall
New Instant Poll
The next Instant Poll question is, "Which Web browser does your
company currently use for Internet (as opposed to intranet) browsing?"
Go to the Security Administrator Web site and submit your vote for:
- Microsoft Internet Explorer (IE)
==== 4. Security Toolkit ====
FAQ: How Can I Enable a Connection to a Machine over RDP and Through a
by John Savill, http://www.winnetmag.com/windowsnt20002003faq
A. RDP operates over TCP port 3389. To enable connectivity to any
machine on the network through a firewall, open this port on the
firewall. To connect to a particular system on the LAN, configure port
forwarding on the firewall to send traffic from port 3389 to that
Featured Thread: Running Multiple Antivirus Scanners
(Three message in this thread)
A reader wants to know whether running two different antivirus
software packages on a network at the same time is a good idea. If
yes, why? If no, why not? Lend a hand or read the responses:
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