CVE-2020-3126 Cisco Webex Meetings Multimedia Viewer Vulnerability
Authenticated attackers can bypass security warnings in Webex Meetings Multimedia Viewer, allowing malicious files to render in a victim's browser without user consent.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3126?
CVE-2020-3126 is a low-severity vulnerability in Cisco Webex Meetings Server, published on 13 Apr 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
vulnerability within the Multimedia Viewer feature of Cisco Webex Meetings could allow an authenticated, remote attacker to bypass security protections. The vulnerability is due to missing security warning dialog boxes when a room host views shared multimedia files. An authenticated, remote attacker could exploit this vulnerability by using the host role to share files within the Multimedia sharing feature and convincing a former room host to view that file. A warning dialog normally appears cautioning users before the file is displayed; however, the former host would not see that warning dialog, and any shared multimedia would be rendered within the user's browser. The attacker could leverage this behavior to conduct additional attacks by including malicious files within a targeted room host's browser window.
Which versions are affected by CVE-2020-3126?
It affects 1 product.
Products include Cisco Webex Meetings Server.
How do I fix CVE-2020-3126?
No fix has been published for CVE-2020-3126 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3126 being exploited?
There is no known exploitation of CVE-2020-3126 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-whw2-mwc3-hmmg.