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             AUSCERT External Security Bulletin Redistribution

             Panorama context switch session cookie disclosure
                                14 May 2020


        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: 

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Palo Alto Networks Security Advisories / CVE-2020-2013

CVE-2020-2013 PAN-OS: Panorama context switch session cookie disclosure

Severity 8.3 . HIGH
Attack Vector NETWORK
Attack Complexity HIGH
Privileges Required NONE
User Interaction REQUIRED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH
Published: 2020-05-13
Updated: 2020-05-13
Ref#: PAN-125122


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


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)


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

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


This issue was found by Ben Nott of Palo Alto Networks during internal security


2020-05-13 Initial publication
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(C) 2020 Palo Alto Networks, Inc. All rights reserved.

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