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AUSCERT External Security Bulletin Redistribution
ESB-2020.1711
Panorama context switch session cookie disclosure
14 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: PAN-OS
Publisher: Palo Alto
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-2013
Original Bulletin:
https://securityadvisories.paloaltonetworks.com/CVE-2020-2013
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Palo Alto Networks Security Advisories / CVE-2020-2013
CVE-2020-2013 PAN-OS: Panorama context switch session cookie disclosure
047910
Severity 8.3 . HIGH
Attack Vector NETWORK
Attack Complexity HIGH
Privileges Required NONE
User Interaction REQUIRED
Scope CHANGED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH
NVD JSON
Published: 2020-05-13
Updated: 2020-05-13
Ref#: PAN-125122
Description
A cleartext transmission of sensitive information vulnerability in Palo Alto
Networks PAN-OS Panorama that discloses an authenticated PAN-OS administrator's
PAN-OS session cookie. When an administrator issues a context switch request
into a managed firewall with an affected PAN-OS Panorama version, their PAN-OS
session cookie is transmitted over cleartext to the firewall. An attacker with
the ability to intercept this network traffic between the firewall and Panorama
can access the administrator's account and further manipulate devices managed
by Panorama.
This issue affects:
PAN-OS 7.1 versions earlier than 7.1.26;
All version of PAN-OS 8.0;
PAN-OS 8.1 versions earlier than 8.1.13;
PAN-OS 9.0 versions earlier than 9.0.6;
and PAN-OS 9.1 versions earlier than 9.1.1.
Product Status
PAN-OS
Versions Affected Unaffected
9.1 < 9.1.1 >= 9.1.1
9.0 < 9.0.6 >= 9.0.6
8.1 < 8.1.13 >= 8.1.13
8.0 8.0.*
7.1 < 7.1.26 >= 7.1.26
Severity: HIGH
CVSSv3.1 Base Score: 8.3 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
Solution
This issue is fixed in PAN-OS 7.1.26, PAN-OS 8.1.13, PAN-OS 9.0.6, PAN-OS
9.1.1, 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.
Workarounds and Mitigations
One possible vulnerability mitigation is to shorten the length of administrator
session idle timeout. This reduces the likelihood the exposed administrator's
session cookie is valid at time of attack.
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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