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Cisco Access Control Server Representational State Transfer Application Programming Interface Denial of Service Vulnerability

Cisco-SA-20150521-CVE-2015-0746 · Medium · Published · Updated

A vulnerability in the Representational State Transfer (REST) application programming interface (API) of the Cisco Access Control Server (ACS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to how the ACS REST API handles increased traffic load. An attacker could exploit this vulnerability by sending large numbers of requests to a targeted device to increase traffic load on the device. An exploit could allow the attacker to cause the ACS REST API to reject or fail to service valid requests, resulting in a DoS condition. Cisco has confirmed the vulnerability; however, software updates are not available. To exploit this vulnerability, an attacker may need access to trusted, internal networks to send large numbers of requests to the affected device. This access requirement may reduce the likelihood of a successful exploit. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

Cisco advisory ·CSAF JSON

Workarounds

Administrators are advised to contact the vendor regarding future updates and releases.

Administrators are advised to allow only trusted users to have network access.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

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.

CVEsCVE-2015-0746
Cisco Bug IDsCSCut62022
CVSS ScoreBase 5.0
Base 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
Product Names From Source
Cisco Secure Access Control Server Solution Engine (ACSE)

CSAF Product Statuses

Product Status Source CVE Rows
Cisco Secure Access Control Server Solution Engine (ACSE) known_affected cisco_csaf CVE-2015-0746 1

Related Products

Product CVE Evidence
Cisco Secure Access Control Server Solution Engine (ACSE) CVE-2015-0746 Cisco OpenVuln