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AUSCERT External Security Bulletin Redistribution
ESB-2020.1721
PAN-OS: Panorama authentication bypass vulnerability
14 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: PAN OS
Publisher: Palo Alto
Operating System: Network Appliance
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-2018
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/CVE-2020-2018
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Palo Alto Networks Security Advisories / CVE-2020-2018
CVE-2020-2018 PAN-OS: Panorama authentication bypass vulnerability
047910
Severity 9 . CRITICAL
Attack Vector NETWORK
Attack Complexity HIGH
Privileges Required NONE
User Interaction NONE
Scope CHANGED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH
NVD JSON
Published: 2020-05-13
Updated: 2020-05-14
Ref#: PAN-123661
Description
An authentication bypass vulnerability in the Panorama context switching
feature allows an attacker with network access to a Panorama's management
interface to gain privileged access to managed firewalls. An attacker requires
some knowledge of managed firewalls to exploit this issue.
This issue does not affect Panorama configured with custom certificates
authentication for communication between Panorama and managed devices.
This issue affects:
PAN-OS 7.1 versions earlier than 7.1.26;
PAN-OS 8.1 versions earlier than 8.1.12;
PAN-OS 9.0 versions earlier than 9.0.6;
All versions of PAN-OS 8.0.
Product Status
PAN-OS
Versions Affected Unaffected
9.0 < 9.0.6 >= 9.0.6
8.1 < 8.1.12 >= 8.1.12
8.0 8.0.*
7.1 < 7.1.26 >= 7.1.26
Severity: CRITICAL
CVSSv3.1 Base Score: 9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
Solution
This issue is fixed in PAN-OS 7.1.26, PAN-OS 8.1.12, PAN-OS 9.0.6, and all
later PAN-OS versions.
Upgrading Panorama to a fixed version is sufficient to resolve the issue.
PAN-OS 8.0 is now end-of-life as of October 31, 2019, and is no longer covered
by our Product Security Assurance policies.
Workarounds and Mitigations
This issue can be completely mitigated by enabling custom certificates
authentication between Panorama and managed firewalls. See https://
docs.paloaltonetworks.com/panorama/8-0/panorama-admin/set-up-panorama/
set-up-authentication-using-custom-certificates.html
This issue affects the management interface of PAN-OS and is strongly mitigated
by following best practices for securing the PAN-OS management interface.
Please review the Best Practices for Securing Administrative Access in the
PAN-OS technical documentation, available at: https://docs.paloaltonetworks.com
Acknowledgements
This issue was found by Ben Nott of Palo Alto Networks during internal security
review.
Timeline
2020-05-13 Initial publication
Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure
Policy Report vulnerabilitiesManage subscriptions
(C) 2020 Palo Alto Networks, Inc. All rights reserved.
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