Security restrictions bypass in Cisco Meeting Server - CVE-2017-12249
Published: September 14, 2017 / Updated: September 14, 2017
Vulnerability identifier: #VU8423
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-12249
CWE-ID: CWE-16
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Meeting Server
Cisco Meeting Server
Detailed vulnerability description
The vulnerability allows a remote authenticated attacker to gain unauthenticated or unauthorized access to components of sensitive information.
The weakness exists due to incorrect default configuration of the TURN server. A remote attacker can use a TURN server, depending on the deployment model and CMS services in use to perform an unauthorized connection to a Call Bridge, a Web Bridge, or a database cluster and gain unauthorized access to sensitive meeting information. Successful exploitation of the vulnerability is able if the attacker has valid credentials for the TURN server.
The weakness exists due to incorrect default configuration of the TURN server. A remote attacker can use a TURN server, depending on the deployment model and CMS services in use to perform an unauthorized connection to a Call Bridge, a Web Bridge, or a database cluster and gain unauthorized access to sensitive meeting information. Successful exploitation of the vulnerability is able if the attacker has valid credentials for the TURN server.
How to mitigate CVE-2017-12249
The vulnerability is addressed in the following versions: 2.0.16, 2.1.11, 2.2.6.