CVE-2020-9049 victor Web Client and C•CURE Web Client JSON Web Token (JWT) Vulnerability
Unauthenticated attackers can forge JWTs to bypass authentication and execute API methods, potentially causing denial of service in victor and C•CURE Web Clients.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-9049?
CVE-2020-9049 is a high-severity authentication bypass vulnerability in Johnson Controls C•CURE Web Client version 2.90 and prior (Note - This does not affect the new web-based C•CURE 9000 client that was introduced in C•CURE 9000 v2.90), published on 19 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in specified versions of American Dynamics victor Web Client and Software House C•CURE Web Client could allow an unauthenticated attacker on the network to create and sign their own JSON Web Token and use it to execute an HTTP API Method without the need for valid authentication/authorization. Under certain circumstances, this could be used by an attacker to impact system availability by conducting a Denial of Service attack.
Which versions are affected by CVE-2020-9049?
It affects 2 products.
Products include Johnsoncontrols C-Cure Web, Johnsoncontrols Victor Web.
How do I fix CVE-2020-9049?
No fix has been published for CVE-2020-9049 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-2020-9049 being exploited?
There is no known exploitation of CVE-2020-9049 in the wild and no public exploit code.
Sources
Also known as GHSA-jq2r-g8wh-6q3v.