PAN-OS: Shell injection vulnerability in PAN-OS CLI allows execution of shell commands

A shell command injection vulnerability in the PAN-OS CLI allows a local authenticated user to escape the restricted shell and escalate privileges. This issue affects only PAN-OS 8.1 versions earlier than PAN-OS 8.1.13. This issue does not affect PAN-OS 7.1, PAN-OS 9.0, or later PAN-OS versions. This issue is fixed in PAN-OS 8.1.13, and all later versions.