GlobalProtect App: Denial of Service -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.1270
        CVE-2021-3038 GlobalProtect App: Windows VPN kernel driver
                          denial of service (DoS)
                               15 April 2021

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

Product:           GlobalProtect App
Publisher:         Palo Alto
Operating System:  Windows
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-3038  

Original Bulletin: 
   https://security.paloaltonetworks.com/CVE-2021-3038

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Palo Alto Networks Security Advisories / CVE-2021-3038

CVE-2021-3038 GlobalProtect App: Windows VPN kernel driver denial of service
(DoS)

047910
Severity 5.5 . MEDIUM
Attack Vector LOCAL
Attack Complexity LOW
Privileges Required LOW
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact NONE
Integrity Impact NONE
Availability Impact HIGH
NVD JSON     
Published 2021-04-14
Updated 2021-04-14
Reference GPC-10983
Discovered externally

Description

A denial-of-service (DoS) vulnerability in Palo Alto Networks GlobalProtect app
on Windows systems allows a limited Windows user to send specifically-crafted
input to the GlobalProtect app that results in a Windows blue screen of death
(BSOD) error.

This issue impacts:

GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.8;

GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.4.

Product Status

      Versions             Affected          Unaffected
GlobalProtect App 5.2 < 5.2.4 on Windows >= 5.2.4 on Windows
GlobalProtect App 5.1 < 5.1.8 on Windows >= 5.1.8 on Windows

Severity: MEDIUM

CVSSv3.1 Base Score: 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Exploitation Status

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Weakness Type

CWE-20 Improper Input Validation

CWE-248 Uncaught Exception

Solution

This issue is fixed in GlobalProtect app 5.1.8, GlobalProtect app 5.2.4, and
all later GlobalProtect app versions.

Workarounds and Mitigations

Acknowledgments

Palo Alto Networks thanks Christophe Schleypen from NCIA / NCIRC for
discovering and reporting this issue.

Timeline

2021-04-14 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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