CVE-2021-3055

PAN-OS: XML External Entity (XXE) Reference Vulnerability in the PAN-OS Web Interface

State: Published
Severity: 6.5 Medium
Published: Sep 8, 2021
Updated: Sep 17, 2024
Reserved: Jan 6, 2021

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H	palo_alto

Weaknesses

CWE-611 Improper Restriction of XML External Entity Reference ('XXE')

Affected Products

Product	Versions
PAN-OSPalo Alto Networks	10.1.*Not affected 9.0 to before 9.0.14Affectedfrom 9.0.14Not affected 9.1 to before 9.1.10Affectedfrom 9.1.10Not affected 10.0 to before 10.0.6Affectedfrom 10.0.6Not affected 8.1 to before 8.1.20Affectedfrom 8.1.20Not affected

References

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

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