title: GlobalProtect App: Windows VPN kernel driver denial of service (DoS)
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.
problem types: CWE-20 Improper Input Validation
affected:
{
platforms: Windows
product: GlobalProtect App
vendor: Palo Alto Networks
versions:
changes: [at: 5.1.8, status: unaffected], lessThan: 5.1.8, status: affected, version: 5.1, versionType: custom
changes: [at: 5.2.4, status: unaffected], lessThan: 5.2.4, status: affected, version: 5.2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 5.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
exploits: Palo Alto Networks is not aware of any malicious exploitation of this issue.
solutions: This issue is fixed in GlobalProtect app 5.1.8, GlobalProtect app 5.2.4, and all later GlobalProtect app versions.