QID 730193

Date Published: 2021-09-20

QID 730193: Palo Alto Networks PAN-OS Reflected Cross-Site Scripting (XSS) in Web Interface (PAN-150337)

PAN OS is the software that runs all Palo Alto Networks next-generation firewalls.

A reflected cross-site scripting (XSS) vulnerability in the Palo Alto Network PAN-OS web interface enables an authenticated network-based attacker to mislead another authenticated PAN-OS administrator to click on a specially crafted link that performs arbitrary actions in the PAN-OS web interface as the targeted authenticated administrator. Affected Versions:
PAN-OS 8.1 versions earlier than PAN-OS 8.1.20
PAN-OS 9.0 versions earlier than PAN-OS 9.0.14
PAN-OS 9.1 versions earlier than PAN-OS 9.1.10
PAN-OS 10.0 versions earlier than PAN-OS 10.0.2
QID Detection Logic (Authenticated):
This QID looks for the vulnerable version of PAN-OS via XML API.

A reflected cross-site scripting (XSS) vulnerability in the Palo Alto Network PAN-OS web interface enables an authenticated network-based attacker to mislead another authenticated PAN-OS administrator to click on a specially crafted link that performs arbitrary actions in the PAN-OS web interface as the targeted authenticated administrator.

  • CVSS V3 rated as Medium - 5.4 severity.
  • CVSS V2 rated as Medium - 3.5 severity.
    • Solution

    Refer to PAN-150337 for more information about patching this vulnerability.Workaround:
    Enable signatures for Unique Threat IDs 91573, 91574, 91575, 91576 on traffic destined for the web interface to block attacks against CVE-2021-3052. 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.

    Vendor References

    CVEs related to QID 730193

    CVE-2021-3052 |
    Software Advisories
    Advisory ID Software Component Link
    PAN-150337 URL Logo security.paloaltonetworks.com/CVE-2021-3052
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