What is CVE-2018-3963?

CVE-2018-3963 is a high-severity vulnerability in Getcujo Smart Firewall, classified under Command Injection. CVSS score: 8.0/10. Published 2019-03-21.

How severe is CVE-2018-3963?

High severity. CVSS v3 base score is 8.0 out of 10.

RCE in Getcujo Smart Firewall

CVE-2018-3963

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.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.026 (83.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Getcujo Smart_firewall — versions 7003
N/a Cujo — versions CUJO Smart Firewall - Firmware version 7003

Weakness classification (CWE)

CWE-77 — Command Injection

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-3963?: CVE-2018-3963 is a high-severity vulnerability in Getcujo Smart Firewall, classified under Command Injection. CVSS score: 8.0/10. Published 2019-03-21.
How severe is CVE-2018-3963?: High severity. CVSS v3 base score is 8.0 out of 10.