What is CVE-2018-3985?

CVE-2018-3985 is a critical-severity vulnerability in Getcujo Smart Firewall, classified under Double Free. CVSS score: 9.8/10. Published 2019-03-21.

How severe is CVE-2018-3985?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Double Free in Getcujo Smart Firewall

CVE-2018-3985

An exploitable double free vulnerability exists in the mdnscap binary of the CUJO Smart Firewall. When parsing mDNS packets, a memory space is freed twice if an invalid query name is encountered, 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: Double Free

EPSS: 0.019 (77.0th percentile) — read the EPSS interpretation.

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.

Affected products

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

Weakness classification (CWE)

CWE-415 — Double Free

References

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

Frequently asked questions

What is CVE-2018-3985?: CVE-2018-3985 is a critical-severity vulnerability in Getcujo Smart Firewall, classified under Double Free. CVSS score: 9.8/10. Published 2019-03-21.
How severe is CVE-2018-3985?: Critical severity. CVSS v3 base score is 9.8 out of 10.