Cisco Meeting Server up to 2.0.15 TURN Server config

Summaryinfo

A vulnerability was found in Cisco Meeting Server up to 2.0.15. It has been rated as problematic. This issue affects some unknown processing of the component TURN Server. This manipulation causes config. This vulnerability is handled as CVE-2017-12249. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Cisco Meeting Server up to 2.0.15 (Unified Communication Software). Affected by this vulnerability is an unknown function of the component TURN Server. The manipulation with an unknown input leads to a config vulnerability. The CWE definition for the vulnerability is CWE-16. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the Traversal Using Relay NAT (TURN) server included with Cisco Meeting Server (CMS) could allow an authenticated, remote attacker to gain unauthenticated or unauthorized access to components of or sensitive information in an affected system. The vulnerability is due to an incorrect default configuration of the TURN server, which could expose internal interfaces and ports on the external interface of an affected system. An attacker could exploit this vulnerability by using a TURN server to perform an unauthorized connection to a Call Bridge, a Web Bridge, or a database cluster in an affected system, depending on the deployment model and CMS services in use. A successful exploit could allow the attacker to gain unauthenticated access to a Call Bridge or database cluster in an affected system or gain unauthorized access to sensitive meeting information in an affected system. To exploit this vulnerability, the attacker must have valid credentials for the TURN server of the affected system. This vulnerability affects Cisco Meeting Server (CMS) deployments that are running a CMS Software release prior to Release 2.0.16, 2.1.11, or 2.2.6. Cisco Bug IDs: CSCvf51127.

The bug was discovered 09/13/2017. The weakness was released 09/13/2017 with Cisco as cisco-sa-20170913-cmsturn as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2017-12249 since 08/03/2017. The attack can be launched remotely. The successful exploitation requires a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592.004 for this issue.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 370557 (Cisco Meeting Server Unauthorized Access and Information Disclosure Vulnerability (cisco-sa-20170913)).

Upgrading to version 2.0.16 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 100821†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Unified Communication Software

Vendor

• Cisco

Name

• Meeting Server

Version

• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.9
• 2.0.10
• 2.0.11
• 2.0.12
• 2.0.13
• 2.0.14
• 2.0.15

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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