A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to view sensitive information from the meeting room lobby. This vulnerability is due to insufficient protection of sensitive participant information. An attacker could exploit this vulnerability by browsing the Webex roster. A successful exploit could allow the attacker to gather information about other Webex participants, such as email address and IP address, while waiting in the lobby. 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-webex-infodisc-4tvQzn4
A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to view sensitive information from the meeting room lobby.
This vulnerability is due to insufficient protection of sensitive participant information. An attacker could exploit this vulnerability by browsing the Webex roster. A successful exploit could allow the attacker to gather information about other Webex participants, such as email address and IP address, while waiting in the lobby.
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-webex-infodisc-4tvQzn4
This vulnerability affected all Cisco Webex Meetings sites releases 40.11.3 and earlier, and Cisco Webex Meetings sites on Slow Channel releases 40.6.11 and earlier. Webex Meetings is cloud based.
At the time of publication, this vulnerability also affected the following releases of Cisco Webex Meetings Server, which is on premises. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
There are no workarounds that address this vulnerability.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories 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.
At the time of publication, the following Cisco Webex Meetings Server releases, which are cloud based, contained the fix for this vulnerability:
At the time of publication, the following releases for Cisco Webex Meetings Server, which is on-premises software, contained the fix for this vulnerability. Customers are advised to apply updated software releases. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Customers who need additional information are advised to contact the Cisco TAC or their contracted maintenance providers.
The Cisco Product Security Incident Response Team (PSIRT) is aware of public announcements about this vulnerability. Cisco PSIRT is not aware of malicious use of the vulnerability that is described in this advisory.
Cisco would like to thank the following researchers from IBM Research for 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 |
|---|---|---|---|---|
| 1.2 | Included Slow Channel releases in Vulnerable Products and Fixed Software. Updated formatting in Vulnerable Products and Fixed Software. | Vulnerable Products and Fixed Software | Final | 2020-NOV-23 |
| 1.1 | Corrected a researcher's name. | Source | Final | 2020-NOV-19 |
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