CVE-2020-3419 Cisco Webex Meetings and Cisco Webex Meetings Server Ghost Join Vulnerability
Unauthenticated attackers can join Webex meetings invisibly with full access if they possess valid join credentials, bypassing participant visibility controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3419?
CVE-2020-3419 is a medium-severity authentication bypass vulnerability in Cisco Webex Meetings Server, published on 18 Nov 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to join a Webex session without appearing on the participant list. This vulnerability is due to improper handling of authentication tokens by a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. A successful exploit requires the attacker to have access to join a Webex meeting, including applicable meeting join links and passwords. The attacker could then exploit this vulnerability to join meetings, without appearing in the participant list, while having full access to audio, video, chat, and screen sharing capabilities.
Weakness: CWE-913
Which versions are affected by CVE-2020-3419?
It affects 1 product.
Products include Cisco Webex Meetings Server.
How do I fix CVE-2020-3419?
No fix has been published for CVE-2020-3419 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-3419 being exploited?
There is no known exploitation of CVE-2020-3419 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Meetings Server
- CVE-2017-12367 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players
- CVE-2015-0589 Command injection in n/a
- CVE-2017-3794 Cross-site request forgery in Cisco WebEx Meetings Server 2.6
- CVE-2016-1448 Cross-site request forgery in n/a
- CVE-2016-1446 SQL injection in n/a
Sources
Also known as GHSA-gq3h-3p4j-vffv.