CVE-2018-3963 — HIGH (8.0) — White Hats Nepal

Vulnerability 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.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Getcujo	Smart Firewall	7003

Related Weaknesses (CWE)

CWE-77

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0627ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0627ExploitThird Party Advisory

FAQ

What is CVE-2018-3963?

CVE-2018-3963 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 th...

How severe is CVE-2018-3963?

CVE-2018-3963 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-3963?

Check the references section above for vendor advisories and patch information. Affected products include: Getcujo Smart Firewall.