Vulnerability identifier: #VU19605

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:U/RC:C]

CVE-ID: CVE-2018-4003

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

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

Vendor: CUJO AI

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the mdnscap binary. A remote attacker can send a specially crafted mDNS message, trigger heap-based buffer overflow and execute arbitrary code 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-2018-0672

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

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.