CVE-2018-4031 is a critical vulnerability affecting the CUJO Smart Firewall (version 7003) within its safe browsing function. The flaw allows for arbitrary Lua script execution in the kernel due to improper sanitization of server hostnames extracted from HTTP/HTTPS requests. This vulnerability has a CVSS score of 10.0 (CRITICAL) and is easily exploitable over the network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
7003CPE matchmatch criteria | cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.