CVE-2021-3046 PAN-OS: Improper SAML Authentication Vulnerability in GlobalProtect Portal
Description
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 issue 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;
PAN-OS 10.0 versions earlier than PAN-OS 10.0.5.
PAN-OS 10.1 versions are not impacted.
Product Status
| Versions | Affected | Unaffected |
|---|---|---|
| PAN-OS 10.1 | None | 10.1.* |
| PAN-OS 10.0 | < 10.0.5 | >= 10.0.5 |
| PAN-OS 9.1 | < 9.1.9 | >= 9.1.9 |
| PAN-OS 9.0 | < 9.0.14 | >= 9.0.14 |
| PAN-OS 8.1 | < 8.1.19 | >= 8.1.19 |
Required Configuration for Exposure
This vulnerability applies only to PAN-OS firewalls configured to have a GlobalProtect portal or gateway with SAML authentication enabled.
Severity: MEDIUM
CVSSv3.1 Base Score: 6.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N)
Exploitation Status
Palo Alto Networks is not aware of any malicious exploitation of this issue.
Weakness Type
CWE-287 Improper Authentication
Solution
This issue is fixed in PAN-OS 8.1.19, PAN-OS 9.0.14, PAN-OS 9.1.9, PAN-OS 10.0.5, and all later PAN-OS versions.
Workarounds and Mitigations
You can disable SAML authentication for any impacted GlobalProtect portal or gateway until you upgrade the PAN-OS firewall to a fixed version.