CVE-2018-4031

Public Exploit

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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.41%
Third-Party Advisory talosintelligence.com
Affected: n/a CUJO
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0703 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-4031?
CVE-2018-4031 has been scored as a critical severity vulnerability.
How to fix CVE-2018-4031?
To fix CVE-2018-4031, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-4031 being actively exploited in the wild?
It is possible that CVE-2018-4031 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-4031?
CVE-2018-4031 affects n/a CUJO.
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