CVE-2017-6679 Security feature bypass in Cisco Umbrella Virtual Appliance Version 2.0.3 and prior
An undocumented auto-initiated SSH tunnel allowed Cisco personnel to access the appliance without explicit customer approval, bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6679?
CVE-2017-6679 is a medium-severity vulnerability in Cisco Umbrella Virtual Appliance Version 2.0.3 and prior, published on 1 Dec 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Cisco Umbrella Virtual Appliance Version 2.0.3 and prior contained an undocumented encrypted remote support tunnel (SSH) which auto initiated from the customer's appliance to Cisco's SSH Hubs in the Umbrella datacenters. These tunnels were primarily leveraged for remote support and allowed for authorized/authenticated personnel from the Cisco Umbrella team to access the appliance remotely and obtain full control without explicit customer approval. To address this vulnerability, the Umbrella Virtual Appliance version 2.1.0 now requires explicit customer approval before an SSH tunnel from the VA to the Cisco terminating server can be established.
Which versions are affected by CVE-2017-6679?
It affects 1 product.
Products include Cisco Umbrella Virtual Appliance.
How do I fix CVE-2017-6679?
No fix has been published for CVE-2017-6679 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-6679 being exploited?
There is no known exploitation of CVE-2017-6679 in the wild and no public exploit code.
Other vulnerabilities in Cisco Umbrella Virtual Appliance Version 2.0.3 and prior
Sources
Also known as GHSA-x42g-fj2g-26mm.