Buffer overflow in Getcujo Smart Firewall
CVE-2018-4003
An exploitable heap overflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. The string lengths are handled incorrectly when parsing character strings in mDNS resource records, leading to arbitrary code execution in the context of the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Getcujo Smart Firewall — versions 7003
- Cujo — versions CUJO Smart Firewall - Firmware version 7003
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2018-0672 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-4003?
- CVE-2018-4003 is a critical-severity vulnerability in Getcujo Smart Firewall, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-03-21.
- How severe is CVE-2018-4003?
- Critical severity. CVSS v3 base score is 9.8 out of 10.