PAN-OS: Modify Arbitrary Files -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1703
                 Predictable temporary file vulnerability
                                14 May 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           PAN-OS
Publisher:         Palo Alto
Operating System:  Network Appliance
Impact/Access:     Modify Arbitrary Files -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-1994  

Original Bulletin: 
   https://securityadvisories.paloaltonetworks.com/CVE-2020-1994

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Palo Alto Networks Security Advisories / CVE-2020-1994

CVE-2020-1994 PAN-OS: Predictable temporary file vulnerability

047910
Severity 4.1 . MEDIUM
Attack Vector LOCAL
Attack Complexity HIGH
Privileges Required HIGH
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact NONE
Integrity Impact HIGH
Availability Impact NONE
NVD JSON     
Published: 2020-05-13
Updated: 2020-05-13
Ref#: PAN-123391

Description

A predictable temporary file vulnerability in PAN-OS allows a local
authenticated user with shell access to corrupt arbitrary system files
affecting the integrity of the system.

This issue affects:

All versions of PAN-OS 7.1 and 8.0;

PAN-OS 8.1 versions earlier than 8.1.13;

PAN-OS 9.0 versions earlier than 9.0.7.

Product Status

PAN-OS

Versions Affected Unaffected
9.2               >= 9.2.0
9.1               >= 9.1.0
9.0      < 9.0.7  >= 9.0.7
8.1      < 8.1.13 >= 8.1.13
8.0      8.0.*
7.1      7.1.*

Severity: MEDIUM

CVSSv3.1 Base Score: 4.1 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N)

Solution

This issue is fixed in PAN-OS 8.1.13, PAN-OS 9.0.7, PAN-OS 9.1.0, PAN-OS 9.2.0,
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

Acknowledgements

This issue was found by a customer.

Timeline

2020-05-13 Initial publication
Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure
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(C) 2020 Palo Alto Networks, Inc. All rights reserved.

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