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.
Cisco has confirmed the vulnerability in a security advisory and released software updates.
Indicators of Compromise
Cisco Secure Access Control System software versions prior to 5.5 are affected.
The vulnerability is due to improper authentication requirements on the device remote management interface.
An unauthenticated, remote attacker could exploit this vulnerability by connecting the remote management interface without authentication credentials using TCP ports 2020 or 2030 and issue commands. The attacker could perform administrative actions through the interface and possibly take complete control over the device.
Attackers may require access to trusted internal networks to connect to the remote management interface on a targeted system, reducing the potential for exploitation.
Administrators are advised to apply the appropriate updates.
Administrators may consider using IP-based access control lists (ACLs)
to allow only trusted systems to access the affected systems.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at email@example.com.
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.