SB2023081707 - Undocumented tunnel support in Cisco Umbrella Virtual Appliance
Published: August 17, 2023
Security Bulletin ID
SB2023081707
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper restriction of communication channel to intended endpoints (CVE-ID: CVE-2017-6679)
CWE-ID: CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to an undocumented support mechanism in the remote support feature of Cisco Umbrella Virtual Appliance. A remote user can obtain full control without explicit customer approval.
Remediation
Install update from vendor's website.