An external dynamic list is configured without server authentication
At a glance
Base severity
Area
Platform
Evidence level
Benchmark reference
Reads the export, not the device
ConfigProof reads a configuration export. This control is evaluated against the objects in that file, and it reports what the file says. It does not connect to the device and sees no traffic, so a finding here describes the configuration, not what the firewall is doing right now.
Why it matters
The rules that name the list act on its contents as policy: every address, domain or URL in it is blocked or allowed. A source whose server is not authenticated can be altered on the way, adding or removing the entries those rules act on.
How to fix it
Web interface
The steps below are written for the web interface. A finding raised on your own export carries the same steps with your object names filled in.
- Serve the list over HTTPS and select a certificate profile that trusts the server's issuer, under Objects, External Dynamic Lists.
Command line
PAN-OS CLI, standalone firewall, vsys1
set vsys vsys1 external-list <object-name> type <list-type> url <https-url>set vsys vsys1 external-list <object-name> type <list-type> certificate-profile <certificate-profile>
An example. Values in angle brackets are yours to supply; a finding on your own export fills in the names it read. Nothing here commits. Review the candidate configuration, then commit it yourself.
Read it back
show vsys vsys1 external-list <object-name>Values to fill in4
- <object-name>
- The object's name, as it appears on your firewall
- <list-type>
- The list's type as the firewall shows it: ip, domain or url
- <https-url>
- The list's source address, starting with https://
- <certificate-profile>
- The certificate profile to require
How to confirm the fix
- Confirm the list still updates after the change: Test Source URL, then check the list's entries.
Limits
- A certificate profile written unreadably or as a template variable is recorded rather than judged.
Compliance references
No benchmark recommendation is mapped to this control in this version.
More in Objects
- PAN-SEC-017Address group is dangerously broad
- PAN-SEC-018Allow rule uses an object that resolves to the whole internet
- PAN-SEC-034Configuration references an object that does not exist
- PAN-SEC-035Group has no members
- PAN-SEC-036Group contains itself through a chain of nested groups
- PAN-SEC-037One object name is defined at more than one scope
- PAN-SEC-038Policy field holds a literal address instead of a named object
- PAN-SEC-039Two address objects overlap under different names
See it on your own firewall
One complete analysis of one firewall costs nothing. A card is required and nothing is charged.