CVE-2020-3155 Cisco Intelligent Proximity SSL Certificate Validation Vulnerability
An attacker can intercept and modify shared content or access call controls on Cisco collaboration endpoints via a man-in-the-middle attack due to missing SSL certificate validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3155?
CVE-2020-3155 is a high-severity vulnerability in Cisco Webex Meetings, published on 4 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the SSL implementation of the Cisco Intelligent Proximity solution could allow an unauthenticated, remote attacker to view or alter information shared on Cisco Webex video devices and Cisco collaboration endpoints if the products meet the conditions described in the Vulnerable Products section. The vulnerability is due to a lack of validation of the SSL server certificate received when establishing a connection to a Cisco Webex video device or a Cisco collaboration endpoint. An attacker could exploit this vulnerability by using man in the middle (MITM) techniques to intercept the traffic between the affected client and an endpoint, and then using a forged certificate to impersonate the endpoint. Depending on the configuration of the endpoint, an exploit could allow the attacker to view presentation content shared on it, modify any content being presented by the victim, or have access to call controls. This vulnerability does not affect cloud registered collaboration endpoints.
Weakness: CWE-295
Which versions are affected by CVE-2020-3155?
It affects 8 products.
Products include Cisco Intelligence Proximity, Cisco Jabber, Cisco Meeting, Cisco Telepresence Codec C40 Firmware, Cisco Telepresence Codec C60 Firmware, Cisco Telepresence Codec C90 Firmware and 2 more.
How do I fix CVE-2020-3155?
No fix has been published for CVE-2020-3155 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3155 being exploited?
There is no known exploitation of CVE-2020-3155 in the wild and no public exploit code.
Sources
Also known as GHSA-qv54-r855-f5j8.