Integer overflow in Getcujo Smart Firewall
CVE-2018-4011
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.
EPSS: 0.013 (68.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Getcujo Smart_firewall — versions 7003
- N/a Cujo — versions CUJO Smart Firewall - Firmware version 7003
Weakness classification (CWE)
References
- talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-4011?
- CVE-2018-4011 is a high-severity vulnerability in Getcujo Smart Firewall, classified under Integer Underflow. CVSS score: 7.5/10. Published 2019-03-21.
- How severe is CVE-2018-4011?
- High severity. CVSS v3 base score is 7.5 out of 10.