TI-2018-02971 Aliases CVE-2018-4003 GHSA-v346-9qx9-79fj

Out-of-bounds write in CUJO

MEDIUM 46CWE-787Published 2019-03-21 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.01829 78th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	CUJO	CUJO Smart Firewall - Firmware version 7003	—	No fix listed	CNA

CUJO Vendor— Affected CUJO Smart Firewall - Firmware version 7003 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:getcujo:smart_firewall:7003:::::::*	7003	Vulnerable	Getcujo

cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:* Versions 7003 Vulnerable ·Getcujo

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-4003
2026-10-03 Alias added: GHSA-v346-9qx9-79fj

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0672

TI-2018-02999 Code injection in CUJO CVSS 3.1CRITICAL 10.0
TI-2018-02953 Double free in CUJO CVSS 3.1CRITICAL 9.8
TI-2018-02931 Command injection in CUJO CVSS 3.1HIGH 8.0
TI-2018-02979 Integer underflow in CUJO CVSS 3.1HIGH 7.5
TI-2018-02998 An exploitable vulnerability exists the safe browsing function of the CUJO Smart… CVSS 3.1HIGH 7.5
TI-2018-02937 OS command injection in CUJO CVSS 3.1HIGH 7.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences