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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.026 (84.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Getcujo Smart Firewall — versions 7003
- Cujo — versions CUJO Smart Firewall - Firmware version 7003
Weakness classification (CWE)
References
- www.talosintelligence.com/vulnerability_reports/TALOS-2018-0627 (Exploit, Third Party Advisory)
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.