topic Re: CVE-2023-38802 in Advanced Threat Prevention Discussions

CVE-2023-38802

securehops — Thu, 14 Sep 2023 01:21:22 GMT

Hi,

Regarding CVE-2023-38802, DDOS in BGP software, would this apply only to public ASNs/BGP sessions established on public internet? I have BGP configured on PAN firewalls but only running BGP over IPSec tunnels using private ASNs

I would think this vulnerability would not apply but didn't want to assume

https://security.paloaltonetworks.com/CVE-2023-38802

Re: CVE-2023-38802

PavelK — Thu, 14 Sep 2023 04:17:57 GMT

Hello @securehops

this issue is triggered by sending crafted BGP update message. If you are running BGP internally within your network only and all your BGP devices are in your control, then I would say you are not affected (Unless somebody you are peering internally sends malicious BGP update).

This issue is not limited to Palo Alto only. End of last month similar issue was reported by Juniper CVE-2023-4481.

Kind Regards

Pavel

Re: CVE-2023-38802

knuanes — Mon, 13 Nov 2023 18:56:45 GMT

Any reason it says it is fixed in 11.0.3 (https://security.paloaltonetworks.com/CVE-2023-38802), but the 11.0.3 known and addressed issues does not show it?

Re: CVE-2023-38802

securehops — Mon, 13 Nov 2023 22:00:00 GMT

11.0.3 is not impacted. The impacted versions are < 11.0.3

Re: CVE-2023-38802

TomYoung — Mon, 13 Nov 2023 22:05:09 GMT

For any drive-by browsers, you can secure your BGP connections only to/from specific IP addresses with an allow security policy rule followed by a drop rule. Then your NGFW will only allow BGP packets from configured peers.

Thanks,

Tom

Re: CVE-2023-38802

knuanes — Mon, 13 Nov 2023 22:06:21 GMT

Thanks, yes the release notes "usually" state that the issue was addressed. In this case it does not. We are on 11.0.2, an affected ver and want to move to 11.0.3, the not impacted ver. But first want to confirm on the release notes that it was a fixed addressed issue.

Re: CVE-2023-38802

securehops — Mon, 13 Nov 2023 22:14:50 GMT

true, good point. They had so many addressed issues in 11.0.3, they forgot that one 😂