CVE-2021-3055

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

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

Weaknesses (CWE)

• CWE-611

European references

• ENISA EUVD · EUVD-2021-26407
• GCVE · GCVE-0-2021-3055

CERT-FR advisories

• CERTFR-2021-AVI-692 — Multiples vulnérabilités dans les produits Palo Alto Networks · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* ≥ 8.1.0 < 8.1.20
• cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.14
• cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* ≥ 9.1.0 < 9.1.10
• cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.6

Affected products

References

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

Sources