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AUSCERT External Security Bulletin Redistribution
ESB-2020.1274
VM-Series on Microsoft Azure: Inadvertent collection of
credentials in Tech support files on HA configured VMs
9 April 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: VM Series Plugin
Publisher: Juniper Networks
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1978
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/CVE-2020-1978
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Palo Alto Networks Security Advisories / CVE-2020-1978
CVE-2020-1978 VM-Series on Microsoft Azure: Inadvertent collection of
credentials in Tech support files on HA configured VMs
Severity 5.8 . MEDIUM
Attack Vector LOCAL
Attack Complexity LOW
Privileges Required HIGH
User Interaction REQUIRED
Scope UNCHANGED
Confidentiality Impact HIGH
Integrity Impact NONE
Availability Impact HIGH
NVD JSON
Published: 2020-04-08
Updated: 2020-04-08
Ref#: PLUG-3787
Description
TechSupport files generated on Palo Alto Networks VM Series firewalls for
Microsoft Azure platform configured with high availability (HA) inadvertently
collect Azure dashboard service account credentials.
These credentials are equivalent to the credentials associated with the
Contributor role in Azure. A user with the credentials will be able to manage
all the Azure resources in the subscription except for granting access to other
resources. These credentials do not allow login access to the VMs themselves.
This issue affects VM Series Plugin versions before 1.0.9 for PAN-OS 9.0.
This issue does not affect VM Series in non-HA configurations or on other cloud
platforms. It does not affect hardware firewall appliances.
Since becoming aware of the issue, Palo Alto Networks has safely deleted all
the tech support files with the credentials. We now filter and remove these
credentials from all TechSupport files sent to us.
The TechSupport files uploaded to Palo Alto Networks systems were only
accessible by authorized personnel with valid Palo Alto Networks credentials.
We do not have any evidence of malicious access or use of these credentials.
Product Status
VM-Series Plugin
Versions Affected Unaffected
1.0 <= 1.0.8 on Microsoft Azure >= 1.0.9 on Microsoft Azure
Required Configuration
This issue only affects VM Series appliances with HA configuration on Microsoft
Azure.
Severity: MEDIUM
CVSSv3.1 Base Score: 5.8 (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:H)
Solution
This issue is fixed in VM-Series Plugin 1.0.9 for Microsoft Azure.
Customers who generated TechSupport files on older versions are advised to
change their Azure dashboard credentials. Customers are advised to delete any
previously generated TechSupport files.
Instructions to change the credentials:
1. Create a new Service Principal with a Contributor role in the Azure AD
Portal. Instructions to create a new Service Principal can be found here -
https://docs.microsoft.com/en-us/azure/active-directory/develop/
howto-create-service-principal-portal
2. Update your Azure HA configuration in the PA-VM configuration with the new
Service Principal credentials. The steps to update the configuration are
provided in "Step 3" of the PA-VM Azure HA configuration guide - https://
docs.paloaltonetworks.com/vm-series/9-0/vm-series-deployment/
set-up-the-vm-series-firewall-on-azure/
configure-activepassive-ha-for-vm-series-firewall-on-azure.html
3. Delete the old Service Principal in the Azure AD Portal that was being used
in the Azure HA configuration. Note: If the old Service Principal is used in
other applications, then the other applications need to be updated with the new
Service Principal.
Workarounds and Mitigations
Do not generate TechSupport files on the affected VMs.
Acknowledgements
This issue was found by Ranjeet Ramalingam during an internal security review.
Timeline
2020-02-19 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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