Learn about CVE-2022-26019, an improper access control vulnerability in pfSense CE and pfSense Plus software versions prior to 2.6.0 and 22.01. Attackers can exploit this flaw to execute arbitrary commands.
This article discusses a critical improper access control vulnerability found in pfSense CE and pfSense Plus software versions prior to 2.6.0 and 22.01. Attackers with certain privileges can exploit this vulnerability to execute arbitrary commands.
Understanding CVE-2022-26019
This section aims to provide a detailed insight into the CVE-2022-26019 vulnerability.
What is CVE-2022-26019?
The vulnerability in pfSense CE and pfSense Plus allows a remote attacker to change NTP GPS settings, leading to unauthorized modification of files on the system, potentially enabling arbitrary command execution.
The Impact of CVE-2022-26019
The impact of this vulnerability is significant as it can be exploited by attackers to rewrite existing files on the file system, posing a threat of executing malicious commands.
Technical Details of CVE-2022-26019
In this section, we explore the technical aspects of the CVE-2022-26019 vulnerability.
Vulnerability Description
The vulnerability arises due to improper access control in pfSense CE and pfSense Plus software versions, allowing unauthorized file system modifications and potential arbitrary command execution.
Affected Systems and Versions
Systems running pfSense CE software versions prior to 2.6.0 and pfSense Plus software versions prior to 22.01 are affected by this vulnerability.
Exploitation Mechanism
Remote attackers with the privilege to change NTP GPS settings can exploit this vulnerability to manipulate files on the file system, opening up avenues for executing arbitrary commands.
Mitigation and Prevention
To safeguard systems from the CVE-2022-26019 vulnerability, certain mitigation strategies need to be implemented.
Immediate Steps to Take
It is crucial to update affected pfSense CE and pfSense Plus software versions immediately to versions 2.6.0 and 22.01, respectively, to eliminate the vulnerability.
Long-Term Security Practices
Adopting a proactive security posture by regularly monitoring for security patches and updates can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly applying security patches and updates released by pfSense can ensure that the systems are protected from vulnerabilities like CVE-2022-26019.