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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2328 Cisco Meeting Server TURN Server Unauthorized Access and Information Disclosure Vulnerability 14 September 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Meeting Server Publisher: Cisco Systems Operating System: Cisco Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-12249 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170913-cmsturn - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco Meeting Server TURN Server Unauthorized Access and Information Disclosure Vulnerability Advisory ID: cisco-sa-20170913-cmsturn Revision: 1.0 For Public Release: 2017 September 13 16:00 GMT Last Updated: 2017 September 13 16:00 GMT CVE ID(s): CVE-2017-12249 CVSS Score v(3): 9.1 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H +--------------------------------------------------------------------- Summary 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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170913-cmsturn ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170913-cmsturn"] - -----BEGIN PGP SIGNATURE----- iQKBBAEBAgBrBQJZuVewZBxDaXNjbyBTeXN0ZW1zIFByb2R1Y3QgU2VjdXJpdHkg SW5jaWRlbnQgUmVzcG9uc2UgVGVhbSAoQ2lzY28gUFNJUlQga2V5IDIwMTYtMjAx NykgPHBzaXJ0QGNpc2NvLmNvbT4ACgkQrz2APcQAkHmHwhAAq60wBxQtx9EKB1LV ZDXYb1/dr5OorqyynzIpSvudFGmE+hwwQsTyIxik7ItBg3yFxI4op6q5/bfv8WyS 6J4a3kun0pGh7G/SXAo8qHZwytb97/2MZHqnQ1o8qrH81joUdbcqGPhtdR5zEhYf 46Gc8Xs/9oheBujjhwPmk/9AxwxrhIN2IphaAV3Ns/nwuttguDHYGqZwWWybQBNu jwouWq2bCWcKi5+u3KAr+NVi6/HS2A9izHxRABCLFqC0cJeqOMneYYpx7VHmejm/ +SGx5ysbGrN5eyfRWMH5sA7vNxw3TeVCJ3SKmJ3VvDmAiOTsmTroK3UUqlS2HUZu 1RppMafl1m2/kvV5VLytNR5+0NuFjDBoWX/3XSpNINhNjFAluaZrEpYEbZ+vTTi9 CRLbH/GZmIZTfI4cpgBJ7XOsM6JOGODAIBG5t7jtLK+V8sBE2iNd3u3A6xDQGSlz ODHtUDnT7Pt5yGQtez1JU/xB3ocNeSZrlwwxDqMlBi5eb40y/7kkoWx03NbmqElp covvVxqjfHy2qq9XCA572c9W7+VrdAU3JbQWiJSQgQTZ2fYJh09i6pR/CEgxSkuw AcHnJkhJbqIRj9PobDcDhJPhDfUvI5uxPeN/XQk7RmSWNasUhRQ/G9FB4t58EFIQ laEPLyUBH8g8efXodQmaqBmR5ww= =i7Bc -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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