CVE-2021-3055 — Vulnetix

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CVE-2021-3055 PUBLISHED CVSS 6.5 MEDIUM

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.

EPSS 0.28% · 51.3th percentile

Risk Scores

CVSS v3.1

6.5

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

EPSS Score

0.28%

51.3th percentile

Affected Products

Vendor	Product	Versions
paloaltonetworks	pan-os	8.1.0, 9.0.0, 9.1.0
Palo Alto Networks	PAN-OS	10.1.*, 8.1, 9.0

Timeline

Sep 8, 2021 CVE Published
Sep 9, 2021 EPSS Score
Nov 5, 2021 EPSS Score
Jan 1, 2022 EPSS Score
Jan 6, 2022 EPSS Score
Feb 27, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 25, 2022 EPSS Score
Jun 22, 2022 EPSS Score
Aug 19, 2022 EPSS Score
Oct 15, 2022 EPSS Score
Dec 11, 2022 EPSS Score

References

https://security.paloaltonetworks.com/CVE-2020-10188 advisory
https://security.paloaltonetworks.com/CVE-2021-3053 advisory
https://security.paloaltonetworks.com/CVE-2021-3049 advisory
https://security.paloaltonetworks.com/CVE-2021-3055 advisory
https://security.paloaltonetworks.com/CVE-2021-3054 advisory
https://security.paloaltonetworks.com/CVE-2021-3051 advisory
https://security.paloaltonetworks.com/CVE-2021-3052 advisory
https://nvd.nist.gov/vuln/detail/CVE-2021-3055 advisory

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