Vulnerability identifier: #VU21160

Vulnerability risk: Low

CVSSv3.1: 7.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2018-3969

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
CUJO Smart Firewall
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: CUJO AI

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient permission restrictions in the verified boot protection. A local user who is able to write into "/config/dhcpd.conf" can add arbitrary shell commands into the "dhcpd.conf" file and execute arbitrary commands on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

CUJO Smart Firewall: 7003

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2018-0634

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.