TI-2018-02979 Aliases CVE-2018-4011 GHSA-whw3-pv3m-qccm

Integer underflow in CUJO

LOW 36CWE-191Published 2019-03-21 · Updated 2024-08-05

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.

Summary

An exploitable integer underflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall, version 7003. When parsing SRV records in an mDNS packet, the "RDLENGTH" value is handled incorrectly, leading to an out-of-bounds access that crashes the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.

Why it matters now

EPSS 0.01323 71st 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-2018-4011
2026-10-03 Alias added: GHSA-whw3-pv3m-qccm

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0681

TI-2018-02999 Code injection in CUJO CVSS 3.1CRITICAL 10.0
TI-2018-02971 Out-of-bounds write in CUJO CVSS 3.1CRITICAL 9.8
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-2018-02998 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