Vulnerability Description
An authenticated command injection vulnerability exists in status_interfaces.php via dhcp_relinquish_lease() in pfSense before 2.4.4 due to its passing user input from the $_POST parameters "ifdescr" and "ipv" to a shell without escaping the contents of the variables. This allows an authenticated WebGUI user with privileges for the affected page to execute commands in the context of the root user when submitting a request to relinquish a DHCP lease for an interface which is configured to obtain its address via DHCP.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netgate | Pfsense | < 2.4.4 |
Related Weaknesses (CWE)
References
- https://doddsecurity.com/190/command-injection-on-pfsense-firewalls/Third Party Advisory
- https://www.pfsense.org/security/advisories/pfSense-SA-18_08.webgui.ascMitigationVendor Advisory
- https://doddsecurity.com/190/command-injection-on-pfsense-firewalls/Third Party Advisory
- https://www.pfsense.org/security/advisories/pfSense-SA-18_08.webgui.ascMitigationVendor Advisory
FAQ
What is CVE-2018-16055?
CVE-2018-16055 is a vulnerability with a CVSS score of 8.8 (HIGH). An authenticated command injection vulnerability exists in status_interfaces.php via dhcp_relinquish_lease() in pfSense before 2.4.4 due to its passing user input from the $_POST parameters "ifdescr" ...
How severe is CVE-2018-16055?
CVE-2018-16055 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16055?
Check the references section above for vendor advisories and patch information. Affected products include: Netgate Pfsense.