Vulnerability in Cisco Umbrella
CVE-2017-6679
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.
EPSS: 0.003 (26.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco Umbrella
- Cisco Umbrella_virtual_appliance
- N/a Cisco Umbrella Virtual Appliance Version 2.0.3 And Prior — versions Cisco Umbrella Virtual Appliance Version 2.0.3 and prior
References
- psirt@cisco.com (Third Party Advisory)
- psirt@cisco.com (Third Party Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry)
- psirt@cisco.com (Third Party Advisory)
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-6679?
- CVE-2017-6679 is a medium-severity vulnerability in Cisco Umbrella. CVSS score: 6.4/10. Published 2017-12-01.
- How severe is CVE-2017-6679?
- Medium severity. CVSS v3 base score is 6.4 out of 10.