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 . 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.
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 . 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.
* This is a low severity vulnerability for Prisma Access. Please refer to the Severity section for impact details. Palo Alto Networks will upgrade all customers during the scheduled maintenance cycle. Customers who require an upgrade prior to this cycle should Palo Alto Networks Support or their account teams to schedule an on-demand software upgrade window.
No special configuration is required to be affected by this issue.
The risk is highest when you allow access to the management interface from external IP addresses on the internet. LOW - CVSS-BT: 1.3 / CVSS-B: 5.3 ( CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 )
You can reduce the risk of exploitation by restricting access to a jump box that is the only system allowed to access the management interface. LOW - CVSS-BT: 1.2 / CVSS-B: 5.1 ( CVSS:4.0/AV:A/AC:L/AT:N/PR:N/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 )
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. LOW - CVSS-BT: 0.4 / CVSS-B: 2.4 ( 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 )
Palo Alto Networks is not aware of any malicious exploitation of these issues.
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63 Cross-Site Scripting (XSS)
Version Minor Version Suggested Solution Cloud NGFW No action needed. PAN-OS 12.1 12.1.2 through 12.1.7-h* Upgrade to 12.1.8 or later. PAN-OS 11.2 11.2.0 through 11.2.12 Upgrade to 11.2.13 or later. PAN-OS 11.1 11.1.0 through 11.1.15-h* Upgrade to 11.1.16 or later. PAN-OS 10.2 10.2.0 through 10.2* Upgrade to 11.1.16, 11.2.13, 12.1.8 or later. All older unsupported PAN-OS versions Upgrade to a supported fixed version. Prisma Access 12.1 12.1.2 through 12.1.7-h* Upgrade to 12.1.8 or later.* Prisma Access 11.2 11.2.0 through 11.2* Upgrade to 12.1.8 or later.* Prisma Access 10.2 10.2.0 through 10.2* Upgrade to 12.1.8 or later.* * See the note under Product Status for information regarding Prisma Access upgrades.
The vast majority of firewalls already follow Palo Alto Networks' and industry best practices. However, if you have not already, we strongly recommend that you secure access to your management interface according to our best practice deployment guidelines . Specifically, you should restrict management interface access to only trusted internal IP addresses. Review information how to secure management access to your Palo Alto Networks firewalls: Palo Alto Networks LIVEcommunity article Palo Alto Networks official and detailed technical documentation
The vast majority of firewalls already follow Palo Alto Networks' and industry best practices. However, if you have not already, we strongly recommend that you secure access to your management interface according to our best practice deployment guidelines . Specifically, you should restrict management interface access to only trusted internal IP addresses.
Review information how to secure management access to your Palo Alto Networks firewalls:
cpe:2.3:o:palo_alto_networks:pan-os:12.1.7:*:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:*:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:-:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.6:*:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:11.2.2:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.1:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.0:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.1.15:*:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:11.1.9:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.1.8:*:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:10.2.15:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:10.2.14:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:10.2.13:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:10.2.12:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:10.2.11:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h37:*:*:*:*:*:*
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cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h13:*:*:*:*:*:*
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The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
