Palo Alto Networks PAN-OS 8.1.x < 8.1.20 / 9.0.x < 9.0.14 / 9.1.x < 9.1.10 / 10.0.x < 10.0.6 Vulnerability

medium Nessus Plugin ID 153146

Synopsis

The remote PAN-OS host is affected by a vulnerability

Description

The version of Palo Alto Networks PAN-OS running on the remote host is 8.1.x prior to 8.1.20 or 9.0.x prior to 9.0.14 or 9.1.x prior to 9.1.10 or 10.0.x prior to 10.0.6. It is, therefore, affected by a vulnerability.

- 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. (CVE-2021-3055)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to PAN-OS 8.1.20 / 9.0.14 / 9.1.10 / 10.0.6 or later

See Also

https://security.paloaltonetworks.com/CVE-2021-3055

https://cwe.mitre.org/data/definitions/611.html

Plugin Details

Severity: Medium

ID: 153146

File Name: palo_alto_CVE-2021-3055.nasl

Version: 1.5

Type: combined

Published: 9/8/2021

Updated: 1/26/2022

Risk Information

VPR

Risk Factor: Medium

Score: 6

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:S/C:P/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-3055

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:paloaltonetworks:pan-os

Required KB Items: Host/Palo_Alto/Firewall/Version, Host/Palo_Alto/Firewall/Full_Version, Host/Palo_Alto/Firewall/Source

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2021

Vulnerability Publication Date: 9/8/2021

Reference Information

CVE: CVE-2021-3055

IAVA: 2021-A-0406-S

CWE: 611