VULNERABILITY INTELLIGENCE

CVE-2018-3963

CVSS score8 HIGH
EPSS probability2.61%
CISA KEVNot currently listed
Published2019-03-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

Primary references