An exploitable vulnerability exists in the safe browsing function of the CUJO Smart Firewall, version 7003. The flaw lies in the way the safe browsing function parses HTTP requests. The server hostname is extracted from captured HTTP/HTTPS requests and inserted as part of a Lua statement without prior sanitization, which results in arbitrary Lua script execution in the kernel. An attacker could send an HTTP request to exploit this vulnerability.
Published 2019-10-31 21:15:12
Updated 2022-06-07 16:49:39
Source Talos
View at NVD,   CVE.org

Products affected by CVE-2018-4031

Exploit prediction scoring system (EPSS) score for CVE-2018-4031

0.43%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 72 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-4031

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
10.0
HIGH AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
NIST
9.0
CRITICAL CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
2.2
6.0
Talos
10.0
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.9
6.0
NIST

CWE ids for CVE-2018-4031

  • The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-4031

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