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Cisco Bug: CSCvs53597 - CWMS Vulnerability

Last Modified

Jan 06, 2020

Products (1)

  • Cisco Webex Meetings Server

Known Affected Releases

2.8MR3

Description (partial)

Symptom:
This is a modification on the product to adopt new secure code best practices to enhance the security posture and resiliency of the Cisco Webex Meetings Server.

Our Network Vulnerability scanner detected a new vulnerability for our WebEx server. 

Host is Vulnerable to Extended Master Secret TLS Extension (TLS triple handshake) port 443/tcp over SSL

The Transport Layer Security (TLS) master secret is not cryptographically bound to important session parameters such as the server certificate. Consequently, it is possible for an active attacker to set up two sessions, one with a client and another with a server, such that the master secrets on the two sessions are the same.

Conditions:
Device running with default configuration.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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