topic Re: ROBOT attack - some advice needed in General Topics

ROBOT attack - some advice needed

_slv_ — Wed, 03 Jan 2018 09:13:45 GMT

Hello

According to https://live.paloaltonetworks.com/t5/Threat-Vulnerability-Articles/PAN-OS-exposure-to-ROBOT-attack/ta-p/192397

For complete protection, signature #38407 must be applied upstream from any interfaces implementing SSL Decryption, or hosting a GlobalProtect portal or a GlobalProtect gateway.

I have 760 content update applied. I tryed to scan ma GP interface using https://robotattack.org/ scanner and of course I'm voulnereable because I'm using PANOS 8.0.6h3 but in threat logs I see nothing related to ROBOT or 38407 attack.

What security policy I should have to protect before this attact? I'm not using SSL decryption.

Regards

SLawek

Re: ROBOT attack - some advice needed

jvalentine — Wed, 03 Jan 2018 17:55:12 GMT

What security policy permits traffic from Untrust to your GP Portal/Gateway? Do you have an explicit policy defined, or are you relying on the default/implicit intra-zone permit policy (which defaults to no logging)?

You can either create an explicit policy before the intra-zone policy that permits untrust to untrust/gp portal+gateway, with vulnerability signatures & logging enabled... or you can modify(override) the default intra-zone policy and make your changes on the action tab.

Re: ROBOT attack - some advice needed

reaper — Wed, 03 Jan 2018 18:20:52 GMT

I'll have to disagree with @jvalentine on this one:

The service, if running on the external interface, will already be vulnerable before the intrazone policy is able to protect it
Ideally you should either block the vulnerability upstream (this can be accomplished by gearing a vwire in front of the untrust interface,), or you can host the GP service on a loopback interface (this loopback can also be in the untrust zone, but because the packets need to "jump" interfaces, they can efficiently be blocked by a security profile)

Re: ROBOT attack - some advice needed

_slv_ — Wed, 03 Jan 2018 18:48:06 GMT

@reaperYes You are right. I'm using external interface in GP configuration.

I checked KB and I found link

Do You have better doc for it?

as we know ... in the future for sure will be another volnureability so the best option will be properly configure GP to use ThreatPrevention to protect it.

Regards

Slawek

Re: ROBOT attack - some advice needed

reaper — Wed, 03 Jan 2018 19:09:46 GMT

As best practice I'd recommend moving the GP interface (and any other 'service' including mgmt etc) to a retracted interface like a loopback so any packets need to pass through the dataplane before even touching the service

Re: ROBOT attack - some advice needed

jvalentine — Wed, 03 Jan 2018 22:26:21 GMT

@reaper

thanks for the clarification... "upstream" getting the most emphasis. Also good to know the added benefit of running on loopbacks vs interfaces. Have to tuck that away for future reference. Thanks!