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AUSCERT External Security Bulletin Redistribution
ESB-2020.1720.2
Panorama management server log injection
1 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Panorama management server
Publisher: Palo Alto
Operating System: Network Appliance
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1996
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/CVE-2020-1996
Revision History: June 1 2020: Vendor added a workaround
May 14 2020: Initial Release
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Palo Alto Networks Security Advisories / CVE-2020-1996
CVE-2020-1996 PAN-OS: Panorama management server log injection
047910
Severity 5.3 . MEDIUM
Attack Vector NETWORK
Attack Complexity LOW
Privileges Required NONE
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact NONE
Integrity Impact LOW
Availability Impact NONE
NVD JSON
Published: 2020-05-13
Updated: 2020-05-29
Ref#: PAN-117955
Description
A missing authorization vulnerability in the management server component of
PAN-OS Panorama allows a remote unauthenticated user to inject messages into
the management server ms.log file. This vulnerability can be leveraged to
obfuscate an ongoing attack or fabricate log entries in the ms.log file
This issue affects:
All versions of PAN-OS 7.1 and 8.0;
PAN-OS 8.1 versions earlier than 8.1.14;
PAN-OS 9.0 versions earlier than 9.0.9.
Product Status
PAN-OS
Versions Affected Unaffected
9.0 < 9.0.9 >= 9.0.9
8.1 < 8.1.14 >= 8.1.14
8.0 8.0.*
7.1 7.1.*
Severity: MEDIUM
CVSSv3.1 Base Score: 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Solution
This issue is fixed in PAN-OS 8.1.14, PAN-OS 9.0.9 (pending release), and all
later PAN-OS versions.
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.
PAN-OS 7.1 is on extended support until June 30, 2020, and is only being
considered for critical security vulnerability fixes.
Workarounds and Mitigations
Attacks against this issue can be blocked with signatures for Unique Threat ID
58197 enabled on a different firewall configured to protect the vulnerable
management interfaces.
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
2020-05-29 Added the workaround of using Unique Threat ID 58197 signatures.
2020-05-13 Initial publication
(C) 2020 Palo Alto Networks, Inc. All rights reserved.
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