VULNERABILITY INTELLIGENCE

CVE-2018-4011

CVSS score7.5 HIGH
EPSS probability1.32%
CISA KEVNot currently listed
Published2019-03-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • CWE-191: Integer Underflow (Wrap or Wraparound)

Primary references