CVE-2021-3046 Explained : Impact and Mitigation
Learn about CVE-2021-3046, an improper SAML authentication vulnerability in Palo Alto Networks PAN-OS impacting GlobalProtect Portal and Gateway. Find out the impact, technical details, and mitigation steps.
An improper authentication vulnerability exists in Palo Alto Networks PAN-OS software that enables a SAML authenticated attacker to impersonate any other user in the GlobalProtect Portal and GlobalProtect Gateway when they are configured to use SAML authentication. This vulnerability impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.19, PAN-OS 9.0 versions earlier than PAN-OS 9.0.14, PAN-OS 9.1 versions earlier than PAN-OS 9.1.9, and PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. PAN-OS 10.1 versions are not affected.
Understanding CVE-2021-3046
This section will cover what CVE-2021-3046 is, its impact, technical details, and mitigation steps.
What is CVE-2021-3046?
CVE-2021-3046 is an improper SAML authentication vulnerability in Palo Alto Networks PAN-OS, allowing a SAML authenticated attacker to impersonate other users in GlobalProtect Portal and Gateway.
The Impact of CVE-2021-3046
The vulnerability impacts PAN-OS versions 8.1, 9.0, and 9.1, enabling attackers to potentially gain unauthorized access to network resources and sensitive data.
Technical Details of CVE-2021-3046
This section dives into the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability arises in PAN-OS firewalls configured with a GlobalProtect portal or gateway using SAML authentication, allowing attackers to exploit improper authentication.
Affected Systems and Versions
PAN-OS 8.1, 9.0, and 9.1 versions prior to specific fixed versions are vulnerable to this issue.
Exploitation Mechanism
Attackers can leverage the SAML authentication process to impersonate legitimate users within the GlobalProtect Portal and Gateway.
Mitigation and Prevention
This section provides guidance on immediate steps to take, long-term security practices, and patching procedures.
Immediate Steps to Take
Disable SAML authentication for affected GlobalProtect portals or gateways until the firewall is updated to a patched version.
Long-Term Security Practices
Enforce strict authentication controls, conduct regular security audits, and stay informed about security advisories from Palo Alto Networks.
Patching and Updates
Upgrade to PAN-OS 8.1.19, 9.0.14, 9.1.9, 10.0.5, or newer versions to address the vulnerability.