What is CVE-2021-3053?

CVE-2021-3053 is a security advisory published by Palo Alto Networks Security Advisories with High severity. CVE-2021-3053 PAN-OS: Exceptional Condition Denial-of-Service (DoS)

Which CVE IDs does CVE-2021-3053 cover?

CVE-2021-3053 covers the following CVE IDs: CVE-2021-3053. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2021-3053?

CVE-2021-3053 affects 1 product, including: PAN-OS.

CVE-2021-3053High

CVE-2021-3053 PAN-OS: Exceptional Condition Denial-of-Service (DoS)

Vendor

Palo Alto Networks Security Advisories

Published

September 8, 2021

Last Modified

September 13, 2021

🔗 CVE IDs covered (1)

CVE-2021-3053 →

📋 Description

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. 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 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. This issue does not affect Prisma Access.

🎯 Affected products1

PAN-OS

✅ Remediation

This issue is fixed in PAN-OS 8.1.20, PAN-OS 9.0.14, PAN-OS 9.1.9, PAN-OS 10.0.5, and all later PAN-OS versions. Workarounds and mitigations: Enable signatures for Unique Threat ID 91593 on traffic processed by the firewall to block attacks against CVE-2021-3053.

🔗 References (1)

advisoryhttps://security.paloaltonetworks.com/CVE-2021-3053