Vulnerability in Cujo Smart Firewall
CVE-2018-4002
An exploitable denial-of-service vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. When parsing labels in mDNS packets, the firewall unsafely handles label compression pointers, leading to an uncontrolled recursion that eventually exhausts the stack, crashing the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (74.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Cujo Smart Firewall
- Cujo Smart Firewall Firmware — versions 7003
- Cujo — versions CUJO Smart Firewall - Firmware version 7003
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2018-0671 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-4002?
- CVE-2018-4002 is a high-severity vulnerability in Cujo Smart Firewall, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2019-10-31.
- How severe is CVE-2018-4002?
- High severity. CVSS v3 base score is 7.5 out of 10.