CVE-2018-18958 : Security Advisory and Response

OPNsense 18.7.x before 18.7.7 has an Incorrect Access Control vulnerability.

Understanding CVE-2018-18958

This CVE describes a security issue in OPNsense versions prior to 18.7.7.

What is CVE-2018-18958?

The vulnerability involves Incorrect Access Control in OPNsense, potentially allowing unauthorized access.

The Impact of CVE-2018-18958

This vulnerability could lead to unauthorized users gaining access to sensitive information or systems.

Technical Details of CVE-2018-18958

The technical aspects of the vulnerability are as follows:

Vulnerability Description

Incorrect Access Control present in OPNsense versions before 18.7.7.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 18.7.7

Exploitation Mechanism

Attackers could exploit this vulnerability to bypass access controls and gain unauthorized entry.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2018-18958:

Immediate Steps to Take

Upgrade OPNsense to version 18.7.7 or later to mitigate the vulnerability.
Monitor access logs for any suspicious activity.

Long-Term Security Practices

Regularly update and patch OPNsense to protect against known vulnerabilities.
Implement strong access control measures to restrict unauthorized access.
Conduct security audits and assessments periodically.
Educate users on secure practices to prevent unauthorized access.

Patching and Updates

Stay informed about security updates and apply patches promptly to secure the system.