A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines https://knowledgebase.paloaltonetworks.com/KCSArticleDetail by restricting access to only trusted internal IP addresses. Prisma Access, Cloud NGFW and Panorama appliances are not impacted by this vulnerability.
| Vendor | Product | Versions |
|---|---|---|
| palo alto | cloud ngfw | 12.1.0, 11.2.0, 11.1.0, 10.2.0 |
Updated description with critical vulnerability details, changed severity to CRITICAL, and noted that there is no exploit available.
Initial creation
