Vulnerability in Palo Alto Networks Pan-Os
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.
EPSS: 0.009 (56.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Palo Alto Networks Pan-os — versions 8.1, 9.0, 10.0
- Palo Alto Networks Prisma Access — versions 2.2 all, 2.1 all
- Paloaltonetworks Pan-os
Weakness classification (CWE)
References
- psirt@paloaltonetworks.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3063?
- CVE-2021-3063 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2021-11-10.
- How severe is CVE-2021-3063?
- High severity. CVSS v3 base score is 7.5 out of 10.