CVE-2021-3055

Published Sep 8, 2021

Last updated 3 years ago

Overview

Description
An improper restriction of XML external entity (XXE) reference vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator to read any arbitrary file from the file system and send a specifically crafted request to 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 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.6. This issue does not affect Prisma Access.
Source
psirt@paloaltonetworks.com
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
6.5
Impact score
5.2
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Severity
MEDIUM

CVSS 2.0

Type
Primary
Base score
7.5
Impact score
7.8
Exploitability score
8
Vector string
AV:N/AC:L/Au:S/C:P/I:N/A:C

Weaknesses

nvd@nist.gov
CWE-611
psirt@paloaltonetworks.com
CWE-611

Social media

Hype score
Not currently trending

Configurations