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AUSCERT External Security Bulletin Redistribution
ESB-2020.2423
Cisco Meetings App Missing TURN Server Credentials Expiration Vulnerability
16 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Meetings App
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3197
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cma-turn-crdls-RHjSzKXn
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Meetings App Missing TURN Server Credentials Expiration Vulnerability
Priority: Medium
Advisory ID: cisco-sa-cma-turn-crdls-RHjSzKXn
First Published: 2020 July 15 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvs98090
CVE-2020-3197
CWE-287
CVSS Score:
4.3 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the API subsystem of Cisco Meetings App could allow an
unauthenticated, remote attacker to retain and reuse the Traversal Using
Relay NAT (TURN) server credentials that are configured in an affected
system.
The vulnerability is due to insufficient protection mechanisms for the TURN
server credentials. An attacker could exploit this vulnerability by
intercepting the legitimate traffic that is generated by an affected
system. An exploit could allow the attacker to obtain the TURN server
credentials, which the attacker could use to place audio/video calls and
forward packets through the configured TURN server. The attacker would not
be able to take control of the TURN server unless the same credentials were
used in multiple systems.
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-cma-turn-crdls-RHjSzKXn
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected all releases of
Cisco Meetings App.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
For information about fixed software releases, see the Details section in
the bug ID(s) at the top of this advisory.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o Cisco would like to thank Muhammad Ra'fat for reporting this vulnerability.
Cisco would also like to thank John Bergvall of Mividas Video Solutions for
individually reporting this vulnerability.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-cma-turn-crdls-RHjSzKXn
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUL-15 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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