Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.
The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW is not affected by this vulnerability.
CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
CVSS Score: 0.4
The risk of exploitation is lower for Prisma Access as it requires an authenticated user and the external network access to the management interface is restricted.
| Exploitability Metrics |
Vulnerable System Impact Metrics |
Subsequent System Impact Metrics |
| Attack Vector |
Adjacent |
Confidentiality |
Low |
Confidentiality |
None |
| Attack Complexity |
Low |
Integrity |
Low |
Integrity |
None |
| Attack Requirements |
None |
Availability |
None |
Availability |
None |
| Privileges Required |
Low |
| User Interaction |
Passive |
The risk of exploitation is lower for Prisma Access as it requires an authenticated user and the external network access to the management interface is restricted.
CVSS 4.0
Palo Alto Networks is not aware of any malicious exploitation of these issues.