pfSense: pfSense-SA-17_10.webgui: Arbitrary Code Execution
Description
On pfSense 2.4.x, a command-injection vulnerability exists in system_camanager.php and system_certmanager.php via cert_get_publickey() from certs.inc due to its passing user certificate and key input through a shell command pipe This allows an authenticated WebGUI user with privileges for either of the affected pages to execute commands in the context of the root user. A similar issue exists on pfSense 2.3.x in the cert_get_modulus() function from certs.inc, but it is only used on system_certmanager.php. A user on version 2.4.2, 2.3.5 or earlier of the pfSense software, granted limited access to the pfSense software WebGUI including access to system_camanager.php (2.4.x) or system_certmanager.php (2.3.x, 2.4.x), could leverage these vulnerabilities to gain increased privileges, read arbitrary files, execute commands, or perform other alterations. This is not relevant for admin-level users as there are other deliberate means by which an administrator could run commands.
Solution(s)
- pfsense-upgrade-latest
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
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