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Cisco Unified Communications Manager IM and Presence Service REST API Denial of Service Vulnerability

Cisco-SA-20151002-CVE-2015-6310 · Medium · Published · Updated

A vulnerability in the Representational State Transfer (REST) interface of the Cisco Unified Communications Manager IM and Presence Service could allow an unauthenticated, remote attacker to cause a partial denial of service (DoS) condition because the Cisco Session Initiation Protocol (SIP) proxy service can unexpectedly restart.   The vulnerability is due to lack of proper input validation of the HTTP request when it is sent to the REST interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the REST interface of the affected application. An exploit could allow the attacker to cause a partial DoS condition because the Cisco SIP proxy service can unexpectedly restart. Cisco has confirmed the vulnerability; however, software updates are not available. To exploit the vulnerability, an unauthenticated attacker must reach the REST interface and send a crafted HTTP request to the device. This 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.

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 are advised to allow only privileged users to access administration or management systems.

Administrators are advised to monitor affected systems.

CVEsCVE-2015-6310
Cisco Bug IDsNA
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 Unified Communications Manager IM and Presence Service

Related Products

Product CVE Evidence