CVE-2023-27253

Deeper analysis

A command injection vulnerability tracked as CVE-2023-27253 affects the restore_rrddata() function in Netgate pfSense version 2.7.0. The flaw resides in the handling of the config.xml component and stems from insufficient validation of XML content, enabling an attacker to inject operating-system commands. It carries a CVSS 3.1 score of 8.8 and is also associated with CWE-91.

An authenticated attacker with network access can supply a crafted XML file to the affected component and thereby execute arbitrary commands on the underlying system. Because the attack requires only low privileges and no user interaction, successful exploitation can result in full confidentiality, integrity, and availability impact on the pfSense instance.

Public references point to a corrective commit in the pfSense repository and a corresponding Redmine issue that document the remediation steps. The same references include a public exploit archive entry describing the restore-rrd-data injection vector, indicating that patch application or upgrade to a fixed release is the primary mitigation path. The associated EPSS score remains near 0.79 with negligible movement between its recorded peak and current values.