10.0
CRITICAL
CVE-2018-4031
CUJO Smart Firewall Lua Script Injection Vulnerability
Description

An exploitable vulnerability exists in the safe browsing function of the CUJO Smart Firewall, version 7003. The flaw lies in the way the safe browsing function parses HTTP requests. The server hostname is extracted from captured HTTP/HTTPS requests and inserted as part of a Lua statement without prior sanitization, which results in arbitrary Lua script execution in the kernel. An attacker could send an HTTP request to exploit this vulnerability.

INFO

Published Date :

Oct. 31, 2019, 9:15 p.m.

Last Modified :

June 7, 2022, 4:49 p.m.

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-4031 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Getcujo smart_firewall
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-4031.

URL Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0703 Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-4031 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-4031 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jun. 07, 2022

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 19, 2022

    Action Type Old Value New Value
    Added CVSS V3 Talos AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Nov. 06, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Changed Reference Type https://talosintelligence.com/vulnerability_reports/TALOS-2018-0703 No Types Assigned https://talosintelligence.com/vulnerability_reports/TALOS-2018-0703 Exploit, Third Party Advisory
    Added CWE NIST CWE-94
    Added CPE Configuration OR *cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-4031 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-4031 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.43 }} 0.09%

score

0.71535

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability