CVE-2024-5918: PAN-OS: Improper Certificate Validation Enables Impersonation of a Legitimate GlobalProtect User (Severity: LOW)
First published: Wed Nov 13 2024(Updated: )
An improper certificate validation vulnerability in Palo Alto Networks PAN-OS software enables an authorized user with a specially crafted client certificate to connect to an impacted GlobalProtect portal or GlobalProtect gateway as a different legitimate user. This attack is possible only if you "Allow Authentication with User Credentials OR Client Certificate."
Credit: psirt@paloaltonetworks.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Palo Alto Networks Cloud NGFW | ||
| Palo Alto PAN-OS | <11.0.3=11.0.0<10.2.4-h5=10.2.0<10.1.11=10.1.0 | 11.0.3 10.2.4-h5 10.1.11 |
| Prisma |
Remedy
You can mitigate this issue by setting the "Allow Authentication with User Credentials OR Client Certificate" option to "No." Additional information is available here: https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-web-interface-help/globalprotect/network-globalprotect-portals/globalprotect-portals-authentication-configuration-tab * https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-web-interface-help/globalprotect/network-globalprotect-portals/globalprotect-portals-authentication-configuration-tab * https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-web-interface-help/globalprotect/network-globalprotect-gateways/globalprotect-gateway-authentication-tab https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-web-interface-help/globalprotect/network-globalprotect-gateways/globalprotect-gateway-authentication-tabhttps://docs.paloaltonetworks.com/pan-os/11-0/pan-os-web-interface-help/globalprotect/network-globalprotect-gateways/globalprotect-gateway-authentication-tab
Remedy
This issue is fixed in PAN-OS 10.1.11, PAN-OS 10.2.4-h5, PAN-OS 10.2.5, PAN-OS 11.0.3, and all later PAN-OS versions.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-5918?
CVE-2024-5918 is classified as a high severity vulnerability due to its potential impact on user authentication.
How do I fix CVE-2024-5918?
To fix CVE-2024-5918, update your PAN-OS software to version 11.0.4 or later, 10.2.5-h5, or 10.1.12.
What systems are affected by CVE-2024-5918?
CVE-2024-5918 affects Palo Alto Networks PAN-OS, Cloud NGFW, and Prisma Access if running specified vulnerable versions.
What is the impact of exploiting CVE-2024-5918?
Exploitation of CVE-2024-5918 allows an unauthorized user to impersonate legitimate users by using a specially crafted client certificate.
Who should be concerned about CVE-2024-5918?
Organizations using affected Palo Alto Networks products should prioritize addressing CVE-2024-5918 to protect user authentication integrity.
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