[NEWS] Cisco Secure ACS UNIX Acme.server Information Disclosure Vulnerability
From: support@securiteam.comDate: 07/07/02
- Previous message: support@securiteam.com: "[NEWS] The Apache "APC" worm"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
From: support@securiteam.com To: list@securiteam.com Date: Sun, 7 Jul 2002 01:22:21 +0200 (CEST)
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion
When was the last time you checked your server's security?
How about a monthly report?
http://www.AutomatedScanning.com - Know that you're safe.
- - - - - - - - -
Cisco Secure ACS UNIX Acme.server Information Disclosure Vulnerability
------------------------------------------------------------------------
SUMMARY
Cisco Secure Access Control Server for UNIX implements the Acme.server and
is therefore vulnerable to a directory traversal vulnerability. The fix
has been included in ACS UNIX version 2.3.6.1 which is currently
available.
This vulnerability is detailed in Cisco Bug ID CSCdu47965.
DETAILS
Affected Products:
The defects described in this document are present in releases beginning
with version 2.0 up to and including version 2.3.5.1 of Cisco Secure ACS
for UNIX Server.
Cisco Secure ACS for Windows NT is not vulnerable to this issue. Cisco
Access Registrar is not vulnerable to this issue.
Details:
This vulnerability exists within the Acme.server program that is part of
the Cisco Secure ACS Unix installation. This vulnerability has been
repaired in the Acme.server utility. The patch is available for Cisco
customers, and has now been incorporated into the Cisco Secure ACS Unix
product.
The vulnerability is triggered when someone browses to the server URL and
adds trailing slashes as in the following example:
http://servername:9090///. This exploit will display the files and
filesystem of the target server.
This vulnerability has been assigned Cisco bug ID CSCdu47965.
Impact:
The impact may vary, depending whether potential attackers have access to
port 9090 on the Cisco Secure ACS computer. This vulnerability could allow
an attacker to view files and directory structures on the target system.
Access to the encrypted password file provided by this vulnerability, for
example, would allow an attacker access through a successful dictionary
attack against the listed accounts.
Customers who may have been vulnerable to attack are advised to review
privileged accounts and any suspicious database changes, and to change
administrative passwords.
Software Versions and Fixes:
There is a patch available, and the fixes are included in Cisco Secure ACS
Unix version 2.3.6.1 and all versions going forward. For existing
versions, the patch may be applied, which resolves the issue. There is no
need to upgrade to a newer version.
Obtaining Fixed Software:
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 the Cisco worldwide
website. Registered users who are logged in can obtain upgrades at
<http://www.cisco.com/cgi-bin/tablebuild.pl/cs-acs>
http://www.cisco.com/cgi-bin/tablebuild.pl/cs-acs.
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 assistance with the upgrade, which should be free
of charge.
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 patch 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) or by email: tac@cisco.com.
Please have your product serial number available and give the URL of this
notice as evidence of your entitlement to the patched software. Patch
requests for non-contract customers must be requested through the TAC.
Please do not contact either "psirt@cisco.com" or
"security-alert@cisco.com" for software upgrades or software patches.
Workarounds:
Workarounds for this vulnerability include general recommendations of
protecting the Cisco Secure ACS for UNIX with strong firewalls, access
controls, and preventing any external or unauthenticated access to the
system, and to port 9090 in particular. This is an interim workaround
only, and a patch or upgrade is recommended.
For this issue, a patch is available which may be installed in place of an
upgrade. The patch is available at the following temporary location:
<ftp://ftpeng.cisco.com/ftp/csu/Acme-Patch.tar.Z>
ftp://ftpeng.cisco.com/ftp/csu/Acme-Patch.tar.Z
For any assistance with the patch, please contact the TAC. This patch
fixes the security problem with the Acme.server. It includes the modified
files provided by Acme. This patch can be applied for any supported
version of Cisco Secure, that is, CiscoSecure/Unix 2.3(3) or later. The
patch consists of one file: FastAdmin/Acme.zip.
Patch Installation Instructions:
To install the patch, follow the instructions below. The commands need to
be executed on your Cisco Secure ACS Unix by the administrator.
1) Stop Cisco Secure by entering the command:
/etc/rc0.d/K80CiscoSecure
2) Change to the base directory where Cisco Secure is installed.
cd $BASEDIR
3) Copy the compressed tar file Acme-Patch.tar.Z into the current
directory.
4) Uncompress and untar the file.
uncompress Acme-Patch.tar.Ztar xvf Acme-Patch.tar
5) Start Cisco Secure with the command:
/etc/rc2.d/S80CiscoSecure
ADDITIONAL INFORMATION
The information has been provided by <mailto:psirt@cisco.com> Cisco
Systems Product Security Incident Response Team.
========================================
This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com
====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.
- Previous message: support@securiteam.com: "[NEWS] The Apache "APC" worm"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Relevant Pages
|
