Users login

Create an account »


Users login

Home » Hacking News » Cisco - Microsoft IIS Vulnerabilities in Cisco Products - MS02-018

Cisco - Microsoft IIS Vulnerabilities in Cisco Products - MS02-018

by Nikola Strahija on April 16th, 2002 This advisory describes a vulnerability that affects Cisco products and applications that are installed on Microsoft operating systems incorporating the use of the Internet Information Server (IIS), and is based on the vulnerability of IIS, not due to a defect of the Cisco product or application.

A number of vulnerabilities were discovered that enables an attacker to execute
arbitrary code or perform a denial of service against the server. These
vulnerabilities were discovered and publicly announced by Microsoft in their
Microsoft Security Bulletin MS02-018.

All Cisco products and applications that are using Microsoft IIS are considered

This advisory is available at the

Affected Products

To determine if a product is vulnerable, review the list below. If the software
versions or configuration information are provided, then only those
combinations are vulnerable.

* Cisco CallManager 3.0, 3.1, 3.2

* Cisco ICS 7750

* Cisco Unity

* Cisco Building Broadband Service Manager 4.x, 5.x

* Cisco uOne Enterprise Edition

* Cisco E-mail Manager (CEM)

* Cisco Network Registrar (CNR)

* Cisco Intelligent Contact Manager (ICM)

Various Cisco Network Management products may be installed on Microsoft
platforms that may be running a vulnerable version of IIS. Much older versions
of CiscoWorks 2000 RWAN/CWSI Campus v2.x and Cisco Voice Manager v1.x are
directly vulnerable because IIS was required as a part of the installation.
Such systems might be offering HTTP services on default ports. These specific
software packages are no longer supported, but are included in this notice to
alert customers that might still be using them.

No other Cisco product is known to be affected by this vulnerability.


Implementations of the Microsoft Internet Information Server are vulnerable to
buffer overflows and denial of service attacks. These vulnerabilities can be
exploited to execute arbitrary code on a computer system or to disrupt normal
operation of the server.

The vulnerabilities have been described in more detail at


By gaining unauthorized access an attacker can view and modify any part of the
operating system accessible with the privileges assigned to the web server user
possibly leading to a breach of confidentiality and integrity of the system. By
performing a denial of service attack, an attacker can cause a disruption in
availability of the web server.

Software Versions and Fixes

Cisco CallManager

| Version | Fixed Regular Release (available |
| Affected | now) |
| | Fix carries forward into all later |
| | versions |
| Version | Install |
| 3.0 | win-OS-Upgrade.2000-1-3spA.exe from |
| | our Software Center |
| Version | Install |
| 3.1 | win-OS-Upgrade.2000-1-3spA.exe from |
| | our Software Center |
| Version | Install |
| 3.2 | win-OS-Upgrade.2000-1-3spA.exe from |
| | our Software Center |

Cisco Unity

| Version | Fixed Regular Release (available |
| Affected | now) |
| | Fix carries forward into all |
| | later versions |
| All Versions | Install patch for MS02-018 |

Cisco Building Broadband Service Manager

| Version | Fixed Regular Release (available |
| Affected | now) |
| | Fix carries forward into all |
| | later versions |
| Version 4.x | Install patch for MS02-018 |
| Version 5.x | Install patch for MS02-018 |

Obtaining Fixed Software

Cisco is offering free software upgrades to address this vulnerability for all
affected customers. Customers may only install and expect support for the
feature sets they have purchased.

Customers with service contracts should contact their regular update channels
to obtain any software release containing the feature sets they have purchased.
For most customers with service contracts, this means that upgrades should be
obtained through the Software Center on Cisco's Worldwide Web site at

Customers whose Cisco products are provided or maintained through a prior or
existing agreement with third-party support organizations such as Cisco
Partners, authorized resellers, or service providers should contact that
support organization for assistance with obtaining the free software upgrade

Customers who purchased directly from Cisco but who do not hold a Cisco service
contract, and customers who purchase through third party vendors but are
unsuccessful at obtaining fixed software through their point of sale, should
obtain fixed software by contacting the Cisco Technical Assistance Center (TAC)
using the contact information listed below. In these cases, customers are
entitled to obtain an upgrade to a later version of the same release or as
indicated by the applicable row in the Software Versions and Fixes table (noted

Cisco TAC contacts are as follows:

* +1 800 553 2447 (toll free from within North America)
* +1 408 526 7209 (toll call from anywhere in the world)
* e-mail: [email protected]

See for additional
TAC contact information, including special localized telephone numbers and
instructions and e-mail addresses for use in various languages.

Please have your product serial number available and give the URL of this
notice as evidence of your entitlement to a free upgrade.

Please do not contact either "[email protected]" or "[email protected]"
for software upgrades.


Cisco is not aware of any available workarounds for these vulnerabilities and
strongly suggests the application of the recommended patches.

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any malicious use of the vulnerabilities
described in this advisory. The vulnerabilities described here have been
discussed publicly on mailing lists and via security advisories released by
other sources.

Status of This Notice: Interim

This is an Interim advisory. Although Cisco cannot guarantee the accuracy of
all statements in this notice, all of the facts have been checked to the best
of our ability. Cisco does not anticipate issuing updated versions of this
advisory unless there is some material change in the facts. Should here be a
significant change in the facts, Cisco may update this advisory.


This notice will be posted on Cisco's Worldwide Web site at
In addition to Worldwide Web posting, a text version of this notice is
clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail
and Usenet news recipients:

* [email protected]
* [email protected]
* [email protected] (includes CERT/CC)
* [email protected]
* [email protected]
* Various internal Cisco mailing lists

Revision History

| Revision | 2002 April 15 | Initial public |
| 1.0 | 18:00 (UTC | release |
| | -0400) | |

Cisco Security Procedures

Complete information on reporting security vulnerabilities in Cisco products,
obtaining assistance with security incidents, and registering to receive
security information from Cisco, is available on Cisco's Worldwide Web site at This includes
instructions for press inquiries regarding Cisco security notices. All Cisco
Security Advisories are available at

Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.


Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »