Web interface denial of service (PAN-SA-2016-0024)

Last revised: 09/08/2016

Summary

Palo Alto Networks firewalls offer a web interface to manage all aspects of the device. A denial of service condition was identified in this process (Ref # 89984).

Severity: Medium

A third party could remotely disrupt the web management process and cause a management delay before the device resumes normal management operations.

Products Affected

PAN-OS 5.1.11 and earlier; PAN-OS 6.0.13 and earlier; PAN-OS 6.1.12 and earlier; PAN-OS 7.0.8 and earlier; PAN-OS 7.1.2 and earlier

Available Updates

PAN-OS 5.1.12 and later; PAN-OS 6.0.14 and later; PAN-OS 6.1.13 and later; PAN-OS 7.0.9 and later; PAN-OS 7.1.3 and later

Workarounds and Mitigations

Palo Alto Networks recommends implementing a best practice of allowing web interface access only to a dedicated management network. Additionally, restrict the set of IP addresses to a subset of authorized sources that you allow to interact with the management network.

Acknowledgements

Itzik Chen