November 20, 2019
Cisco Webex Centers are prone to an information-disclosure vulnerability. Attackers can exploit this issue to obtain sensitive information that may aid in further attacks. This issue is being tracked by Cisco Bug IDs CSCvq81213 and CSCvq81230. Cisco Webex Event Center, Cisco Webex Meeting Center, Cisco Webex Support Center and Cisco Webex Training Center are vulnerable.
- Cisco WebEx Meeting Center
- Cisco WebEx Training Center
- Cisco Webex Events Center
- Cisco Webex Support Center
Block external access at the network boundary, unless external parties require service.
Block external access at the network boundary, unless external parties require service. Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.
Run all software as a nonprivileged user with minimal access rights.
Attackers may successfully exploit client flaws in the browser through cross-site scripting vulnerabilities. When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity including unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.
Updates are available. Please see the references or vendor advisory for more information.
Yakov Shafranovich and Pankaj Upadhyay of T. Rowe Price Associates, Inc.
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