Description
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.
Published: 2021-11-10
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

This issue is fixed in PAN-OS 8.1.21, PAN-OS 9.0.14-h4, PAN-OS 9.1.11-h3, PAN-OS 10.0.8-h4, PAN-OS 10.1.3, and all later PAN-OS versions.


Vendor Workaround

Enable signatures for Unique Threat IDs 91820 and 91855 on traffic destined for GlobalProtect interfaces to block attacks against CVE-2021-3063.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-26415 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.
History

No history.

Subscriptions

Paloaltonetworks Pan-os
cve-icon MITRE

Status: PUBLISHED

Assigner: palo_alto

Published:

Updated: 2024-09-16T20:26:42.141Z

Reserved: 2021-01-06T00:00:00.000Z

Link: CVE-2021-3063

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-11-10T17:15:10.507

Modified: 2024-11-21T06:20:53.020

Link: CVE-2021-3063

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses