PT-2011-27: Multiple Vulnerabilities in Cisco ACS Web Interface

Vulnerable platform

Cisco ACS
Version: 5.2.0.26 and earlier, 5.3.0.40 and earlier

Link:
<http://www.cisco.com/en/US/products/sw/secursw/ps2086/index.html&gt;

Severity level

Severity level: Medium
Impact: Cross-Site Scripting
Access Vector: Network exploitable

CVSS v2:
Base Score: 4.3
Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVE: CVE-2011-3317

Platform description

Cisco Secure Access Control Server (ACS) is an access policy control platform.

Vulnerability description

Positive Research Center has discovered multiple vulnerabilities in the Cisco ACS web interface.

Cross-site scripting vulnerabilities are triggered when a specially crafted value is assigned to different variables in scripts, which allows one to manage device through Web-interface. This can be exploited to inject malicious code and execute arbitrary HTML or script code in the admin browser session in the context of the device’s web management interface.
Malicious users can inject JavaScript, VBScript, ActiveX, HTML, or Flash into a vulnerable application to fool administrators in order to gather data from their machines. An attacker can steal the session cookie and take over the account impersonating an administrator. It is also possible to modify the page content displayed to the administrator or the change device settings.

The details are not disclosed by agreement with the Cisco company.

How to fix

We recommend that you download the latest cumulative patch. The patches for users with service contracts are available through their regular update channels (in most cases, through the Software Center on Cisco’s worldwide website at <http://www.cisco.com>).

Users whose Cisco products are provided or maintained through agreements with third-party support organizations should contact that support organization for guidance and assistance.

Fixed software can also be obtained via the Cisco Technical Assistance Center (TAC). Refer to <http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html&gt; for additional TAC contact information.

Advisory status

28.07.2011 - Vendor is notified
28.07.2011 - Vendor gets vulnerability details
13.02.2012 - Vendor releases fixed version and details
20.02.2012 - Public disclosure

Credits

These vulnerabilities were discovered by Maxim Tsoy, Yuriy Goltsev, Alexander Zaitsev, and Evgeniy Tolmachev, Positive Research Center (Positive Technologies Company)

References

<http://en.securitylab.ru/lab/PT-2011-27&gt;

Reports on the vulnerabilities previously discovered by Positive Research:

<http://www.ptsecurity.com/advisory1.aspx&gt;
<http://en.securitylab.ru/lab/&gt;