CVE-2021-3058 PAN-OS: OS Command Injection Vulnerability in Web Interface XML API
Description
An OS command injection vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator with permissions to use XML API the ability to execute arbitrary OS commands to escalate privileges.
This issue impacts:
PAN-OS 8.1 versions earlier than PAN-OS 8.1.20-h1;
PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h3;
PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h2;
PAN-OS 10.0 versions earlier than PAN-OS 10.0.8;
PAN-OS 10.1 versions earlier than PAN-OS 10.1.3.
This issue does not impact Prisma Access firewalls.
Product Status
| Versions | Affected | Unaffected |
|---|---|---|
| PAN-OS 10.1 | < 10.1.3 | >= 10.1.3 |
| PAN-OS 10.0 | < 10.0.8 | >= 10.0.8 |
| PAN-OS 9.1 | < 9.1.11-h2 | >= 9.1.11-h2 |
| PAN-OS 9.0 | < 9.0.14-h3 | >= 9.0.14-h3 |
| PAN-OS 8.1 | < 8.1.20-h1 | >= 8.1.20-h1 |
| Prisma Access 2.2 | None | all |
| Prisma Access 2.1 | None | all |
Required Configuration for Exposure
This vulnerability is only applicable to PAN-OS firewalls configured to use the XML API.
Severity: HIGH
CVSSv3.1 Base Score: 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Exploitation Status
Palo Alto Networks is not aware of any malicious exploitation of this issue.
Weakness Type
Solution
This issue is fixed in PAN-OS 8.1.20-h1, PAN-OS 9.0.14-h3, PAN-OS 9.1.11-h2, PAN-OS 10.0.8, PAN-OS 10.1.3, and all later PAN-OS versions.
Workarounds and Mitigations
Enable signatures for Unique Threat ID 91715 on traffic processed by the firewall to block attacks against CVE-2021-3058.
This issue requires the attacker to have authenticated access to the PAN-OS web interface. You can mitigate the impact of this issue by following best practices for securing the PAN-OS web interface. Please review the Best Practices for Securing Administrative Access in the PAN-OS technical documentation at https://docs.paloaltonetworks.com/best-practices.