A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper protections on data that is returned from user meeting requests when the Guest access via ID and passcode option is set to Legacy mode. An attacker could exploit this vulnerability by sending meeting requests to an affected system. A successful exploit could allow the attacker to determine the values of meeting room unique identifiers, possibly allowing the attacker to conduct further exploits. 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-20181107-meeting-server
A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker to gain access to sensitive information.
The vulnerability is due to improper protections on data that is returned from user meeting requests when the Guest access via ID and passcode option is set to Legacy mode. An attacker could exploit this vulnerability by sending meeting requests to an affected system. A successful exploit could allow the attacker to determine the values of meeting room unique identifiers, possibly allowing the attacker to conduct further exploits.
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-20181107-meeting-server
There are no workarounds that address this vulnerability. However, customers can use Secure mode for the Guest access via ID and passcode option to prevent exploitation of this vulnerability.
For information about fixed software releases, consult the Cisco bug ID(s) at the top of this advisory.
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.
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.
Cisco would like to thank Andrea Marini and Francesco Russo from NTT DATA Italia for reporting this vulnerability.
Cisco would like to thank Yamila Levalle from Innovation and Lab at ElevenPaths, the Cybersecurity Unit of Telefónica, for independently reporting this vulnerability.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.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.0 | Initial public release. | - | Final | 2018-November-07 |
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