Cisco Secure Access Control System contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site request forgery attacks. Updates are available.
A vulnerability in the Cisco Access Control System (ACS) Administration and View pages could allow an unauthenticated, remote attacker to perform a cross-site request forgery (CSRF) attack.
The vulnerability is due to insufficient CSRF protections. An attacker could exploit this vulnerability by convincing an authenticated ACS user to access a malicious link.
Cisco has confirmed this vulnerability in a security notice and released software updates.
At the time this alert was first published, Cisco ACS 220.127.116.11.3 and prior were vulnerable. Later releases of Cisco ACS may also be affected.
To exploit the vulnerability, the attacker may provide a link to a malicious site and may persuade the user to follow the link by using misleading language and instructions.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
Cisco has released a security notice at the following link: CVE-2013-3424
Customers should refer to Cisco bug ID CSCud75177 for the most complete list of affected product versions.
An unauthenticated, remote attacker could exploit this vulnerability to submit arbitrary requests to the affected device with the privileges of an authenticated user. Successful exploitation could allow an attacker to conduct further attacks.
The vulnerability is due to insufficient CSRF protections imposed by an affected device.
An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious website. If successful, the attacker could submit arbitrary requests to the affected device with the privileges of an authenticated user. Successful exploitation could be used to conduct further attacks.
Administrators are advised to apply the appropriate updates.
Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
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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