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====================
==== This Issue Sponsored By ====
Sybari Software
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====================
1. In Focus: Passive Vulnerability Scanning
2. Security Risks
- Denial of Service in SpeakFreely for Windows
- Denial of Service in wzdftpd FTP Server for Windows
- Mondosoft's MondoSearch File-Creation Vulnerability
3. Announcements
- Attend Windows & .NET Magazine Connections, Win a Free Vacation
- Check Out Our 2 New Web Seminars!
4. Security Roundup
- News: Report: Microsoft Monoculture Is a National Security Risk
- News: Sophos Acquires ActiveState
- News: California Cracks Down Hard on Spammers
5. Instant Poll
- Results of Previous Poll: DRM Use
- New Instant Poll: Firewall and IDS Use
6. Security Toolkit
- Virus Center
- FAQ: How Can I Use Microsoft Internet Explorer (IE) to Pass a
Username and Password to an FTP Site?
- Featured Thread: Auditing Software for Windows 2000?
7. Event
- The Mobile & Wireless Road Show Is Coming to Tampa and Atlanta!
8. New and Improved
- Authenticate Using Steel-Belted Appliance
- Secure Your Web Portal
- Tell Us About a Hot Product and Get a T-Shirt
9. Contact Us
See this section for a list of ways to contact us.
====================
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==== 1. In Focus: Passive Vulnerability Scanning ====
by Mark Joseph Edwards, News Editor, mark@private
Last week, I wrote about Intrusion Detection Systems (IDSs) and about
a couple of reports that evaluate some (but not all) of the more
popular IDSs. IDSs are valuable tools for your network, as are
firewalls, vulnerability scanners, packet sniffers and analyzers, port
scanners, network mapping tools, and so on.
I recently learned about a new tool called a Passive Vulnerability
Scanner (PVS). A PVS is a hybrid tool that combines the sniffing
capabilities of a packet sniffer and analyzer with the capabilities of
an active vulnerability scanner and an IDS.
As you know, a packet analyzer and sniffer promiscuously captures
packets from the network so that you can analyze them; an active
vulnerability scanner probes systems and devices to detect known
vulnerabilities; and an IDS detects possible intrusion attempts as
traffic moves over your network. A PVS can do all of those things,
with a slight twist in the way it works. But a PVS isn't a replacement
for those types of tools--instead, it's complementary.
You place a PVS on the network in a position in which it can monitor
the traffic coming from various network segments, just like a network
sniffer. The PVS then sniffs the traffic in real time and analyzes it
by comparing it with a set of rules, like a vulnerability scanner
does. Broken rules trip triggers that alert the PVS administrator to
possible security problems on the network.
For example, you might have an environment in which none of the
network systems should be running FTP servers and only certain systems
should be running Web servers. If anyone from inside or outside your
network initiates inbound FTP access to one of your systems, the PVS
will alert you. Likewise, if the PVS detects Web traffic to a system
that shouldn't be running Web services, the PVS will alert you. These
sorts of detections are typical of IDSs, but the PVS can take the
analysis further.
When detecting Web traffic in this example, the PVS can analyze the
packets to try to determine what type of Web server software is in
use. If it's an outdated version of Microsoft IIS or Apache, the PVS
will alert the administrator that the system is running a vulnerable
software package. The administrator becomes aware of the problem
immediately without having to run a periodic vulnerability scan on
individual systems to detect problems.
In one more example, someone could place a server in your
demilitarized zone (DMZ) without your approval or knowledge. With a
PVS in place, you might become aware of that action sooner than you
would have otherwise because the PVS monitors traffic and doesn't
depend on network device audits or on vulnerability scans or agent
software running on individual systems. PVSs are independently
deployed, centrally manageable, and scan for problems by looking at
network traffic.
I only know of one PVS system available at the moment: Tenable Network
Security's NeVO, which runs on the Red Hat Linux and FreeBSD UNIX
platforms. Although NeVO doesn't run on Windows platforms, it's
compatible with Windows networks. It can detect anomalies on Windows
and UNIX networks, and because its logs are generated in a
Nessus-style format, you can use any Nessus client, such as the
Windows-based Nessus client, to access them. (Nessus is an active
vulnerability scanner; for more information, go to
http://www.nessus.org .)
You can learn more about NeVO at the first URL below. You'll also find
a more detailed explanation of the PVS and NeVO, "Passive
Vulnerability Scanning, Introduction to NeVO," in PDF format at the
second URL below.
http://www.tenablesecurity.com/nevo.html
http://www.tenablesecurity.com/docs/passive_scanning_tenable.pdf
Tenable offers a 30-day demo of the product. If you try a copy on your
network, send me an email message to let me know what you think of the
PVS concept and how well it works for you in your environment.
====================
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====================
==== 2. Security Risks ====
contributed by Ken Pfeil, ken@private
Denial of Service in SpeakFreely for Windows
Luigi Auriemma discovered that a vulnerability in Speak Freely for
Windows can result in a Denial of Service (DoS) condition. Sending
multiple spoofed packets (more than 160 packets of 2 bytes or more
each) results in the termination of the program, with an error message
such as, "Cannot create transmit socket for host (x.x.x.x), error
10055. No buffer space is available." SpeakFreely's developer has been
notified.
http://secadministrator.com/articles/index.cfm?articleid=40352
Denial of Service in wzdftpd FTP Server for Windows
Moran Zavdi discovered that a vulnerability in wzdftpd FTP server
for Windows can result in a Denial of Service (DoS) condition. Sending
a CRLF sequence at logon causes an unhandled exception at the server.
The wzdftpd developer has released a patch for this vulnerability.
http://secadministrator.com/articles/index.cfm?articleid=40351
Mondosoft's MondoSearch File-Creation Vulnerability
Jens H. Christensen discovered that a vulnerability in Mondosoft's
MondoSearch can result in the execution of arbitrary code on the
vulnerable computer. One of the default installation files,
msmsetup.exe, contains a vulnerability that lets malicious users
create files with user-specified content on the Web server or anywhere
that the executing user (typically IUSR_xxx) has write access. For
details about this vulnerability, see the discoverer's Web site.
Mondosoft has released a patch for this vulnerability.
http://secadministrator.com/articles/index.cfm?articleid=40350
====================
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====================
==== 3. Announcements ====
(from Windows & .NET Magazine and its partners)
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Check Out Our 2 New Web Seminars!
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==== 4. Security Roundup ====
News: Report: Microsoft Monoculture Is a National Security Risk
A damning report written by security experts and sponsored by
Microsoft's competitors concludes that the "monoculture" created by
the software giant's dominance is a national security risk. The report
was released at a meeting of the Computer & Communications Industry
Association (CCIA).
http://secadministrator.com/articles/index.cfm?articleid=40340
News: Sophos Acquires ActiveState
Antivirus software maker Sophos announced that it has acquired
ActiveState, a Canadian-based maker of spam-filtering and development
tools. Sophos will acquire ActiveState and all of the company's stock
for $23 million.
http://secadministrator.com/articles/index.cfm?articleid=40344
News: California Cracks Down Hard on Spammers
California Governor Gray Davis signed legislation that prohibits
advertisers from sending unsolicited email and said the law contains
no loopholes that can be used to thwart it.
http://secadministrator.com/articles/index.cfm?articleid=40345
====================
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====================
==== 5. Instant Poll ====
Results of Previous Poll: DRM Use
The voting has closed in Windows & .NET Magazine's Security
Administrator Channel nonscientific Instant Poll for the question, "Is
your company using or planning to use Digital Rights Management
(DRM)?" Here are the results from the 88 votes.
- 2% We have a DRM application in production
- 5% We're experimenting with DRM
- 18% We see some possible applications for DRM but aren't working
with it yet
- 75% We aren't interested in DRM
New Instant Poll: Firewall and IDS Use
The next Instant Poll question is, "Does your company use firewalls
and Intrusion Detection Systems (IDSs) to protect the infrastructure?"
Go to the Security Administrator Channel home page and submit your
vote for
- Yes, we use both firewalls and IDSs
- No, we only use firewalls
- Not sure
http://www.secadministrator.com
==== 6. Security Toolkit ====
Virus Center
Panda Software and the Windows & .NET Magazine Network have teamed
to bring you the Center for Virus Control. Visit the site often to
remain informed about the latest threats to your system security.
http://www.secadministrator.com/panda
FAQ: How Can I Use Microsoft Internet Explorer (IE) to Pass a Username
and Password to an FTP Site?
contributed by John Savill, http://www.windows2000faq.com
If you access an FTP site that doesn't allow anonymous access, you
must provide a username and password. To access an FTP site
anonymously from IE, use the syntax
ftp://ftp.>
To pass a username and password, the syntax is
ftp://>:<password>@ftp.<sitename>
For example, to access the Internet Software Consortium (ISC) FTP site
with a username and password, you might type
ftp://john:john@privateat_private
where "john" is the username and "john@private" is the password.
Similarly, to pass just a username, you can use the syntax
ftp://>@ftp.<sitename>
Featured Thread: Auditing Software for Windows 2000?
(3 messages in this thread)
Brycea writes that he has a small network of 25 users with five
servers and Windows 2000 Server running Active Directory (AD) in
native mode. He has one server available to the outside world that
runs Microsoft IIS for FTP and the Web. The FTP server has been on the
internal network with openings on the firewall for ports 21 and 80,
but Brycea recently upgraded to a firewall that has an optional
demilitarized zone (DMZ) port and he'd like to move the FTP server
onto a DMZ. He'd like to know the best practices for using a DMZ for
an AD network on its own subnet. Lend a hand or read the responses:
http://www.winnetmag.com/forums/messageview.cfm?catid=42&threadid=63521
==== 7. Event ====
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industry standards. Register now for this free, 12-city event!
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==== 8. New and Improved ====
by Sue Cooper, products@private
Authenticate Using Steel-Belted Appliance
Network Engines introduced Steel-Belted Radius Enterprise Edition
Appliance 2.0 to deploy remote and wireless LAN (WLAN) access control
and security on a network. The appliance combines Network Engines'
rack-mountable hardware with Funk Software's Steel-Belted Radius
Enterprise Edition 4.5 and an embedded, hardened version of Windows
2000 Professional. The appliance now supports two-factor
authentication products, which ensures that only authorized users have
access to your network. Steel-Belted Radius Enterprise Edition
Appliance 2.0 is available from TidalWire, a Network Engines company.
For more information, contact TidalWire at 877-638-8277 or
sales@private
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Secure Your Web Portal
Entrust announced Entrust TruePass 7.0, a Web security solution
that delivers bidirectional, end-to-end security for your
organization's online information. Users can submit sensitive
information as encrypted and digitally signed XML or HTML data, or as
secure file attachments. The Web server can return secured real-time
updates, approvals, and instructions to the users, eliminating the
need for paper-based processes. The application provides centralized,
role-based password policies, digital ID management in cross-certified
environments, certificate revocation list (CRL) checking on
third-party certificates, and diagnostic tools. Contact Entrust at
888-690-2424 or entrust@private
http://www.entrust.com
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we'll send you a Windows & .NET Magazine T-shirt if we write about the
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===================
==== 9. Contact Us ====
About the newsletter -- letters@private
About technical questions -- http://www.winnetmag.com/forums
About product news -- products@private
About your subscription -- securityupdate@private
About sponsoring Security UPDATE -- emedia_opps@private
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Thank you for reading Security UPDATE!
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: Thu Oct 02 2003 - 05:44:21 PDT