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Cisco Security Advisory: Cisco Security Agent Management
Center LDAP
Administrator Authentication Bypass
Advisory ID: cisco-sa-20061101-csamc
http://www.cisco.com/warp/public/707/cisco-sa-
20061101-csamc.shtml
Revision 1.0
For Public Release 2006 November 01 1600 UTC (GMT)
-
------------------------------------------------------------
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Summary
=======
Cisco Security Agent Management Center (CSAMC) contains an
administrator authentication bypass vulnerability when
configured to
use an external Lightweight Directory Access Protocol (LDAP)
server
for authentication.
There is a workaround for this vulnerability. Cisco has made
free
software available to address this vulnerability for
affected
customers.
This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-
20061101-csamc.shtml
Affected Products
=================
Vulnerable Products
+------------------
CSAMC version 5.1 prior to Hotfix 5.1.0.79 is affected by
this
vulnerability.
Products Confirmed Not Vulnerable
+--------------------------------
CSAMC versions prior to 5.1 are not affected by this
vulnerability.
No other Cisco products are currently known to be affected
by this
vulnerability.
Details
=======
Cisco Security Agent Management Center (CSAMC) version 5.1
contains
an administrator authentication bypass vulnerability when
configured
to authenticate administrators against an external LDAP
server.
There are three roles for CSAMC administrators: configure,
deploy,
and monitor. The configure role has complete access to the
CSAMC
application, including the ability to create security
policies. The
deploy role can create agent kits, deploy security policies,
and
perform application monitoring. The deploy role cannot
modify
security policies. The monitoring role can only perform
application
monitoring functions.
All CSAMC administrator accounts are defined in the local
CSAMC
database and have an assigned role. CSAMC can be configured
to use an
external LDAP server to authenticate administrators. As a
safety
feature, it is possible to specify certain administrator
accounts to
fall back to local authentication if the LDAP server is
unavailable.
If CSAMC is configured to use LDAP for authentication, it is
possible
to supply a valid administrator username and blank (zero
length)
password and gain administrative access to the CSAMC
application with
the role privileges of the administrator. This vulnerability
occurs
when CSAMC incorrectly handles an authentication failure
message from
the LDAP server. The administrator password stored on the
LDAP server
is a valid, non-blank password.
CSAMC version 5.1 is the first to include external LDAP
authentication. LDAP authentication is not the default
configuration
for CSAMC and must be explicitly configured. The LDAP server
in this
configuration is not built into CSAMC.
Information on configuring administrator LDAP authentication
for
CSAMC can be found here:
http://www.cisco.com/en/US/products/sw/secursw/ps505
7/products_configuration_guide_chapter09186a008066e98e.html#
wp994975
Information on configuring role-based administration for
CSAMC can be
found here:
http://www.cisco.com/en/US/products/sw/secursw/ps505
7/products_configuration_guide_chapter09186a008066e98e.html#
wp965432
This vulnerability is documented in Cisco Bug ID CSCsg40822
Impact
======
Successful exploitation of this vulnerability allows an
attacker with
a valid administrator username to gain access to the CSAMC
application with the role privileges of the compromised
administrator
account. If the administrator has a role of configure or
deploy, it
is possible to make policy changes for managed CSA clients.
This may
be leveraged to reduce the security posture of managed
systems and
allow potential attacks against the managed systems.
Software Version and Fixes
===========================
When considering software upgrades, also consult
http://www.cisco.com/go
/psirt and any subsequent advisories to
determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be
certain the
devices to be upgraded contain sufficient memory and that
current
hardware and software configurations will continue to be
supported
properly by the new release. If the information is not
clear, contact
the Cisco Technical Assistance Center ("TAC") or
your contracted
maintenance provider for assistance.
+---------------------------------------+
| Affected Software | Fixed Software |
| Version | Version |
|---------------------+-----------------|
| CSAMC version 5.1 | CSAMC version |
| Hotfix prior to | 5.1 Hotfix |
| 5.1.0.79 | 5.1.0.79 |
+---------------------------------------+
Fixed CSAMC (fcs-csamc-hotfix-5.1.0.79-w2k-k9.zip) software
can be
downloaded at
http://www.cisco.com/cgi-bin/tablebuild.pl/c
sahf-crypto?psrtdcat20e2
Workarounds
===========
It is possible to workaround this vulnerability by disabling
external
LDAP authentication and configuring administrators to
authenticate
against the local CSAMC database.
Obtaining Fixed Software
========================
Cisco will make free software available to address this
vulnerability
for affected customers. This advisory will be updated as
fixed
software becomes available. Prior to deploying software,
customers
should consult their maintenance provider or check the
software for
feature set compatibility and known issues specific to their
environment.
Customers may only install and expect support for the
feature sets
they have purchased. By installing, downloading, accessing
or
otherwise using such software upgrades, customers agree to
be bound by
the terms of Cisco's software license terms found at
http://www.cisco.com/public/sw-license-agreement.html,
or as otherwise
set forth at Cisco.com Downloads at
http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt cisco.com" or
"security-alertcisco.com"
for software upgrades.
Customers with Service Contracts
+-------------------------------
Customers with contracts should obtain upgraded software
through
their regular update channels. For most customers, this
means that
upgrades should be obtained through the Software Center on
Cisco's
worldwide website at http://www.cisco.com.
Customers using Third Party Support Organizations
+------------------------------------------------
Customers whose Cisco products are provided or maintained
through
prior or existing agreement with third-party support
organizations
such as Cisco Partners, authorized resellers, or service
providers
should contact that support organization for guidance and
assistance
with the appropriate course of action in regards to this
advisory.
The effectiveness of any workaround or fix is dependent on
specific
customer situations such as product mix, network topology,
traffic
behavior, and organizational mission. Due to the variety of
affected
products and releases, customers should consult with their
service
provider or support organization to ensure any applied
workaround or
fix is the most appropriate for use in the intended network
before it
is deployed.
Customers without Service Contracts
+----------------------------------
Customers who purchase direct 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 get their upgrades by contacting
the Cisco
Technical Assistance Center (TAC). 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: taccisco.com
Have your product serial number available and give the URL
of this
notice as evidence of your entitlement to a free upgrade.
Free
upgrades for non-contract customers must be requested
through the
TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC
.shtml
for additional TAC contact information, including special
localized
telephone numbers and instructions and e-mail addresses for
use in
various languages.
Exploitation and Public Announcements
=====================================
The Cisco PSIRT is not aware of any public announcements or
malicious
use of the vulnerability described in this advisory.
This vulnerability was reported to Cisco by a third party.
Status of this Notice: FINAL
============================
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND
DOES NOT IMPLY ANY
KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF
THE
INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE
DOCUMENT IS
AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR
UPDATE THIS
DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this
document that
omits the distribution URL in the following section is an
uncontrolled copy, and may lack important information or
contain
factual errors.
Distribution
============
This advisory is posted on Cisco's worldwide website at :
http://www.cisco.com/warp/public/707/cisco-sa-
20061101-csamc.shtml
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.
* cust-security-announcecisco.com
* first-teamsfirst.org
* bugtraqsecurityfocus.com
* vulnwatchvulnwatch.org
* ciscospot.colorado.edu
* cisco-nsppuck.nether.net
* full-disclosurelists.grok.org.uk
* comp.dcom.sys.cisconewsgate.cisco.com
Future updates of this advisory, if any, will be placed on
Cisco's
worldwide website, but may or may not be actively announced
on
mailing lists or newsgroups. Users concerned about this
problem are
encouraged to check the above URL for any updates.
Revision History
================
+----------------------------------------+
| Revision | | Initial |
| 1.0 | 2006-November-01 | public |
| | | release. |
+----------------------------------------+
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 website at
http://www.cisco.com/en/US/produc
ts/products_security_vulnerability_policy.html
This includes instructions for press inquiries regarding
Cisco
security notices. All Cisco security advisories are
available at
http://www.cisco.com/go
/psirt
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