Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

  CVE-2020-2043 PAN-OS: Passwords may be logged in clear text when using
          after-change-detail custom syslog field for config logs
                             10 September 2020


        AusCERT Security Bulletin Summary

Product:           PAN-OS
Publisher:         Palo Alto
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-2043  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Palo Alto Networks Security Advisories / CVE-2020-2043

CVE-2020-2043 PAN-OS: Passwords may be logged in clear text when using
after-change-detail custom syslog field for config logs

Severity 3.3 . LOW
Attack Vector LOCAL
Attack Complexity LOW
Privileges Required LOW
User Interaction NONE
Confidentiality Impact LOW
Integrity Impact NONE
Availability Impact NONE
Published 2020-09-09
Updated 2020-09-09
Reference PAN-146837
Discovered internally


An information exposure through log file vulnerability where sensitive fields
are recorded in the configuration log without masking on Palo Alto Networks
PAN-OS software when the after-change-detail custom syslog field is enabled for
configuration logs and the sensitive field appears multiple times in one log
entry. The first instance of the sensitive field is masked but subsequent
instances are left in clear text.

This issue impacts:

PAN-OS 8.1 versions earlier than PAN-OS 8.1.16;

PAN-OS 9.0 versions earlier than PAN-OS 9.0.10;

PAN-OS 9.1 versions earlier than PAN-OS 9.1.4.

Product Status

  Versions   Affected Unaffected
PAN-OS 10.0  None     >= 10.0.0
PAN-OS 9.1   < 9.1.4  >= 9.1.4
PAN-OS 9.0   < 9.0.10 >= 9.0.10
PAN-OS 8.1   < 8.1.16 >= 8.1.16

Required Configuration for Exposure

This issue is only applicable when when the after-change-detail custom syslog
field is enabled for config logs.

Severity: LOW

CVSSv3.1 Base Score: 3.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Weakness Type

CWE-532 Information Exposure Through Log Files


This issue is fixed in PAN-OS 8.1.16, PAN-OS 9.0.10, PAN-OS 9.1.4, and all
later PAN-OS versions.

Workarounds and Mitigations

This issue requires access to PAN-OS log files generated in the system. You can
mitigate the impact of this issue 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


This issue was found by a customer of Palo Alto Networks during internal
security review.


2020-09-09 Initial publication
Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure
Policy Report vulnerabilitiesManage subscriptions
(C) 2020 Palo Alto Networks, Inc. All rights reserved.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
Comment: http://www.auscert.org.au/render.html?it=1967