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PAN-OS: Denial-of-Service (DoS) Vulnerability in DNS Proxy

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PAN-OS: Denial-of-Service (DoS) Vulnerability in DNS Proxy

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
04/13/2022
Created
04/15/2022
Added
04/14/2022
Modified
04/25/2022

Description

An improper handling of exceptional conditions vulnerability exists in the DNS proxy feature of Palo Alto Networks PAN-OS software that enables a meddler-in-the-middle (MITM) to send specifically crafted traffic to the firewall that causes the service to restart unexpectedly. Repeated attempts to send this request result in denial-of-service to all PAN-OS services by restarting the device in maintenance mode. This issue does not impact Panorama appliances and Prisma Access customers. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.22; PAN-OS 9.0 versions earlier than PAN-OS 9.0.16; PAN-OS 9.1 versions earlier than PAN-OS 9.1.13; PAN-OS 10.0 versions earlier than PAN-OS 10.0.10; PAN-OS 10.1 versions earlier than PAN-OS 10.1.5. This issue does not impact PAN-OS 10.2.

Solution(s)

  • palo-alto-networks-pan-os-upgrade-10-0
  • palo-alto-networks-pan-os-upgrade-10-1
  • palo-alto-networks-pan-os-upgrade-8-1
  • palo-alto-networks-pan-os-upgrade-9-0
  • palo-alto-networks-pan-os-upgrade-9-1

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