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CVE-2017-6679

Published: Dec 1, 2017Updated: Jun 22, 2026 Sources: CVE List NVD BDUNVD-CWE-noinfo
6.4MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 72.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Cisco Systems Inc.
commercial·USaka cisco, cisco systems
umbrella virtual appliance
Networking Infrastructure
Cisco Umbrella
Networking Infrastructure
and 1 more affected products View all →

Exploitability

Official Patch Available

References

http://www.securityfocus.com/bid/101567
securityfocus.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-tunnel-gJw5thgE
sec.cloudapps.cisco.com
https://support.umbrella.com/hc/en-us/articles/115004154423
support.umbrella.com
and 2 more references View all →

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