Vulnerabilities > CVE-2018-4011 - Integer Underflow (Wrap or Wraparound) vulnerability in Getcujo Smart Firewall 7003
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH 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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |
Common Weakness Enumeration (CWE)
Talos
| id | TALOS-2018-0681 |
| last seen | 2019-05-29 |
| published | 2019-03-19 |
| reporter | Talos Intelligence |
| source | http://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0681 |
| title | CUJO Smart Firewall mdnscap mDNS SRV record denial-of-service vulnerability |