Integer underflow in CUJO Smart Firewall - CVE-2018-4011
Published: September 17, 2019 / Updated: September 17, 2019
Vulnerability identifier: #VU21162
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2018-4011
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: CUJO AI
Affected software:
CUJO Smart Firewall
CUJO Smart Firewall
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists because of integer underflow in the "mdnscap" binary when parsing SRV records in an mDNS packet due to the "RDLENGTH" value is handled incorrectly. A remote attacker can send a specially crafted mDNS message to the affected application, trigger integer underflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-4011
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.