CVE-2018-3985 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Getcujo	Smart Firewall	7003

Related Weaknesses (CWE)

CWE-415

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0653ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0653ExploitThird Party Advisory

FAQ

What is CVE-2018-3985?

CVE-2018-3985 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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, lead...

How severe is CVE-2018-3985?

CVE-2018-3985 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-3985?

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