title: PAN-OS: GlobalProtect Clientless VPN session hijacking
description: A cross-site scripting (XSS) vulnerability exists when visiting malicious websites with the Palo Alto Networks GlobalProtect Clientless VPN that can compromise the user's active session. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.7; All versions of PAN-OS 8.0.
problem types: CWE-79 Cross-site Scripting (XSS)
affected:
{
product: PAN-OS
vendor: Palo Alto Networks
versions:
status: affected, version: 8.0.*
changes: [at: 7.1.26, status: unaffected], lessThan: 7.1.26, status: affected, version: 7.1, versionType: custom
changes: [at: 8.1.13, status: unaffected], lessThan: 8.1.13, status: affected, version: 8.1, versionType: custom
changes: [at: 9.0.7, status: unaffected], lessThan: 9.0.7, status: affected, version: 9.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 7.1
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
version: 3.1
]
solutions: This issue is fixed in PAN-OS 7.1.26, PAN-OS 8.1.13, PAN-OS 9.0.7, and all later versions of PAN-OS.
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: Configure GlobalProtect Clientless VPN to only access known trusted websites, and block access all other websites.