CVE-2020-3483 Duo Network Gateway (DNG) Information Disclosure Vulnerability
Attackers with host access can read logged SSL private keys, enabling decryption of TLS traffic to protected applications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3483?
CVE-2020-3483 is a high-severity vulnerability in Cisco Duo Network Gateway (DNG), published on 14 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Duo has identified and fixed an issue with the Duo Network Gateway (DNG) product in which some customer-provided SSL certificates and private keys were not excluded from logging. This issue resulted in certificate and private key information being written out in plain-text to local files on the DNG host. Any private keys logged in this way could be viewed by those with access to the DNG host operating system without any need for reversing encrypted values or similar techniques. An attacker that gained access to the DNG logs and with the ability to intercept and manipulate network traffic between a user and the DNG, could decrypt and manipulate SSL/TLS connections to the DNG and to the protected applications behind it. Duo Network Gateway (DNG) versions 1.3.3 through 1.5.7 are affected.
Which versions are affected by CVE-2020-3483?
It affects 1 product.
Products include Cisco Duo Network Gateway.
How do I fix CVE-2020-3483?
No fix has been published for CVE-2020-3483 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3483 being exploited?
There is no known exploitation of CVE-2020-3483 in the wild and no public exploit code.
Other vulnerabilities in Cisco Duo Network Gateway (DNG)
Sources
Also known as GHSA-6348-6g85-hp24.