AV:N/AC:M/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C
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Cisco Secure Access Control System (ACS) is affected by the following vulnerabilities:
- Cisco Secure ACS RMI Privilege Escalation Vulernability
- Cisco Secure ACS RMI Unauthenticated User Access Vulnerability
- Cisco Secure ACS Operating System Command Injection Vulnerability
Cisco Secure ACS uses the Remote Method Invocation (RMI) interface for internode communication using TCP ports 2020 and 2030.
Cisco has released software updates that address these vulnerabilities. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140115-csacs
Network-based mitigations for the RMI-based vulnerabilities are outlined in the Cisco Applied Mitigation Bulletin: Identifying and Mitigating the Multiple Vulnerabilities in Cisco Secure Access Control System
http://tools.cisco.com/security/center/viewAMBAlert.x?alertId=32120
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Vulnerable Products
All releases of Cisco Secure ACS prior to release 5.5 are affected by the RMI-based vulnerabilities in this advisory.
All releases of Cisco Secure ACS prior to ACS 5.4 patch 3 are affected by the OS command injection vulnerability in this advisory.
Products Confirmed Not Vulnerable
The following Cisco Secure Access Control Server products are not affected by this vulnerabilities:
- Cisco Secure Access Control Server for Windows
- Cisco Secure Access Control Server Express
- Cisco Secure Access Control Server View
- Cisco Secure Access Control Server Solution Engine
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A core component of the Cisco TrustSec solution, Cisco Secure ACS is a highly sophisticated policy platform providing RADIUS and TACACS+ services. It supports the increasingly complex policies needed to meet today's new demands for access control management and compliance. Cisco Secure ACS provides central management of access policies for device administration and wireless, wired 802.1x, and remote VPN network access scenarios. The identity stores can be internal or external. An internal identity store has user credential information stored in an internal database. With an external identity store, Cisco Secure ACS will retrieve information from an external database.
Cisco Secure ACS RMI Privilege Escalation Vulernability
A vulnerability in the RMI interface of Cisco Secure ACS could allow an authenticated, remote attacker to perform actions as superadmin.
The vulnerability is due to insufficient authorization enforcement. An attacker could exploit this vulnerability by accessing the ACS via the RMI interface using an authenticated user account. An exploit could allow the attacker to perform superadmin functions via RMI.
This vulnerability is documented in Cisco bug ID CSCud75180 (registered customers only) and has been assigned CVE ID CVE-2014-0649.
Cisco Secure ACS RMI Unauthenticated User Access Vulnerability
A vulnerability in the RMI interface of Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to access the ACS via the RMI interface.
The vulnerability is due to insufficient authentication and authorization enforcement. An attacker could exploit this vulnerability by accessing the ACS via the RMI interface. An exploit could allow the attacker to access the ACS and perform administrative actions.
This vulnerability is documented in Cisco bug ID CSCud75187 (registered customers only) and has been assigned CVE ID CVE-2014-0648.
The RMI interface transports data over TCP port 2020 and TCP port 2030. The RMI interface is utilized for communication between Cisco ACS nodes in a distributed deployment environment.
Cisco Secure ACS Operating System Command Injection Vulnerability
A vulnerability in the web interface of Cisco Secure ACS could allow an authenticated, remote attacker to inject operating system-level commands.
The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting operating system commands into a specific location of the ACS web interface. An exploit could allow the attacker to perform operating system-level commands without shell access, impacting the confidentiality, integrity, or availability of the system.
This vulnerability is documented in Cisco bug ID CSCue65962 (registered customers only) and has been assigned CVE ID CVE-2014-0650.
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There are no configuration workarounds available for these vulnerabilities.
http://tools.cisco.com/security/center/viewAMBAlert.x?alertId=32120
Network-based mitigations for the RMI-based vulnerabilities are outlined in the Cisco Applied Mitigation Bulletin:
Identifying and Mitigating the Multiple Vulnerabilities in Cisco Secure Access Control System
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The following table provides first fixed release information for the Cisco Secure ACS release that are affected. The last row of the table gives information about the release version that includes the fix for all the vulnerabilities described in this advisory.
5.0 5.1 5.2 5.3 5.4 Cisco Secure ACS RMI Privilege Escalation Vulernability
Migrate to 5.5 or later
Migrate to 5.5 or later Migrate to 5.5 or later
Migrate to 5.5 or later Migrate to 5.5
Cisco Secure ACS RMI Unauthenticated User Access Vulnerability Migrate to 5.5 or later
Migrate to 5.5 or later Migrate to 5.5 or later Migrate to 5.5 or later Migrate to 5.5
Cisco Secure ACS Operating System Command Injection Vulnerability Migrate to 5.4 or later
Migrate to 5.4 or later Migrate to 5.4 or later Migrate to 5.4 or later 5.4 Patch 3
First Fixed release for all vulnerabilities in this advisory
5.5
When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Cisco Secure ACS 5.5 can be downloaded from the Software Center on Cisco.com by visiting http://www.cisco.com/cisco/software/navigator.html and navigating to Products > Security > Access Control and Policy > Policy and Access Management > Cisco Secure Access Control System > Cisco Secure Access Control System 5.5
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
These vulnerabilities were found during internal testing.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Revision 1.0 2014-January-15 Initial public release.
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