CVE-2017-6679
The Cisco Umbrella Virtual Appliance Version 2.0.3 and prior contained an undocumented encrypted remote support tunnel (SSH) which auto ini…
Published 8 y ago · modified 4 mo ago · JSON
Summary
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.
Exploit prediction (EPSS)
0.34% probability of exploitation in the next 30 days, higher than 27% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 6.4 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Affected products
- n/a Cisco Umbrella Virtual Appliance Version 2.0.3 and prior
References
- info-sec.ca /advisories/Cisco-Umbrella.html · x_transferred
- support.umbrella.com /hc/en-us/articles/115004752143-Virtual-Appliance-Vulnerability-due-to-always-on-SSH-Tunne · x_transferred
- securityfocus.com /bid/101567 · vdb-entry, x_transferred
- support.umbrella.com /hc/en-us/articles/115004154423 · x_transferred
- sec.cloudapps.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-tunnel-gJw5thgE · vendor-advisory, x_transferred
Sources
- CVE List: CVE-2017-6679
- NVD: CVE-2017-6679
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