PAN-OS: Denial-of-Service (DoS) Vulnerability in GlobalProtect Portal and Gateway Interfaces
CVE-2021-3063

7.5HIGH

Key Information:

Vendor

Palo Alto Networks
Status
Pan-os
Prisma Access
Vendor
CVE Published:
10 November 2021

Badges

👾 Exploit Exists

What is CVE-2021-3063?

An improper handling of exceptional conditions vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to send specifically crafted traffic to a GlobalProtect interface that causes the service to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.21; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h4; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8-h4; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers are not impacted by this issue.

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Affected Version(s)

PAN-OS 8.1 < 8.1.21

PAN-OS 9.0 < 9.0.14-h4

PAN-OS 10.0 < 10.0.8-h4

References

https://security.paloaltonetworks.com/CVE-2021-3063
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was found by Nicholas Newsom of Palo Alto Networks during internal security review.
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