Cisco Access Control Server contains a vulnerability that could allow an authenticated, remote attacker to gain access to sensitive information. Updates are available.
A vulnerability in the administrative web interface of Cisco Access Control Server could allow an authenticated, remote attacker to access the report view functions of the portal without being given the proper privileges.
The vulnerability is due to a failure to properly secure the report view page. An attacker could exploit this vulnerability by directly entering the report view URL into their browser. An exploit could allow the attacker to view potentially sensitive information that they have not be given explicit access to view.
Cisco has confirmed the vulnerability in a security notice and software updates are available.
At the time this alert was first published, Cisco Secure Access Control System (ACS) 5.4 and prior were vulnerable. Later versions of Cisco ACS may also be affected.
To exploit this vulnerability, the attacker must authenticate to a targeted system. This access requirement limits the possibility of a successful exploit.
Customers are advised to review the bug report in the "Vendor Announcements" section for a current list of affected versions.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An authenticated, remote attacker could exploit this vulnerability to gain unauthorized access to view sensitive information. Successful exploitation could be leveraged to conduct further attacks.
The vulnerability is due to improper security restrictions imposed by the administrative web interface of the affected software.
An authenticated, remote attacker could exploit this vulnerability by entering the report view URL into their browser. If successful, the attacker could have the ability to gain unauthorized access to the report view functions of the portal which could allow the attacker to view sensitive information on the targeted system.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at firstname.lastname@example.org for assistance.
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