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CVE-2018-3963

8.0 · HIGH

An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall.

Published Mar 21, 2019CWE-77EPSS 2.61%

Overview

CVE-2018-3963 is a high-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.1 base score of 8.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall. When adding a new static DHCP address, its corresponding hostname is inserted into the dhcpd.conf file without prior sanitization, allowing for arbitrary execution of system commands. To trigger this vulnerability, an attacker can send a DHCP request message and set up the corresponding static DHCP entry.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.talosintelligence.com/vulnerability_reports/TALOS-2018-0627Refwww.talosintelligence.com/vulnerability_reports/TALOS-2018-0627

How CyberStrike helps

Frequently asked questions

What is CVE-2018-3963?

CVE-2018-3963 is a high-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.1 base score of 8.0 (HIGH).

How severe is CVE-2018-3963?

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-3963?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-3963?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-3963 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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