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AUSCERT External Security Bulletin Redistribution
ESB-2020.1095.2
Palo Alto Networks Security Advisories / CVE-2020-1979
13 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: PAN-OS log daemon (logd)
Publisher: Palo Alto
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Increased Privileges -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1979
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/CVE-2020-1979
Revision History: May 13 2020: Vendor released update to clarify attack vector, description and acknowledgement
March 30 2020: Initial Release
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Palo Alto Networks Security Advisories / CVE-2020-1979
CVE-2020-1979 PAN-OS: A format string vulnerability in PAN-OS log daemon (logd)
on Panorama allows local privilege escalation
047910
Severity 8.1 . HIGH
Attack Vector NETWORK
Attack Complexity HIGH
Privileges Required NONE
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH
NVD JSON
Published: 2020-03-11
Updated: 2020-05-12
Ref#: PAN-97584
Description
A format string vulnerability in the PAN-OS log daemon (logd) on Panorama
allows a network based attacker with knowledge of registered firewall devices
and access to Panorama management interfaces to execute arbitrary code,
bypassing the restricted shell and escalating privileges.
This issue affects only PAN-OS 8.1 versions earlier than PAN-OS 8.1.13 on
Panorama.
This issue does not affect PAN-OS 7.1, PAN-OS 9.0, or later PAN-OS versions.
Product Status
PAN-OS
Versions Affected Unaffected
9.1 >= 9.1.0
9.0 >= 9.0.0
8.1 < 8.1.13 >= 8.1.13
7.1 >= 7.1.0
Required Configuration
N/A
Severity: HIGH
CVSSv3.1 Base Score: 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Solution
This issue is fixed in PAN-OS 8.1.13 and all later PAN-OS 8.1 versions.
Workarounds and Mitigations
This issue affects the management interface of Panorama and is mitigated by
following best practices for securing the Panorama management interface. Our
best practices guidelines reduce the exposure of the management interface to
potential attackers. Please review the Best Practices for Securing
Administrative Access in the PAN-OS 8.1 technical documentation, available at:
https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-admin/getting-started/
best-practices-for-securing-administrative-access.
Acknowledgements
This issue was discovered by Nicholas Newsom of Palo Alto Networks during an
internal security review.
Timeline
2020-05-12 Updated attack vector, description and acknowledgement.
2020-03-11 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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