Information disclosure in Cisco WebEx Meetings Server and Cisco Webex Meetings - CVE-2020-3471

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Main Vulnerability Database Vulnerabilities #VU48556

Information disclosure in Cisco WebEx Meetings Server and Cisco Webex Meetings - CVE-2020-3471

Published: November 18, 2020 / Updated: November 19, 2020


Vulnerability identifier: #VU48556
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3471
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a synchronization issue between meeting and media services on a vulnerable Webex site. A remote attacker can send specially crafted requests to maintain the audio connection of a Webex session despite being expelled.


Affected software

Cisco WebEx Meetings Server
Cisco Webex Meetings

How to mitigate CVE-2020-3471

Install updates from vendor's website.

Cisco WebEx Meetings Server - addressed in versions 3.0MR3 Patch 5, 4.0MR3 Patch 4

External References

Related Security Bulletins