QID 730349

Date Published: 2022-02-11

QID 730349: Palo Alto Networks (PAN-OS) Uniform Resource Locator (URL) Category Exceptions Match More URLs Than Intended in URL Filtering Vulnerability (PAN-174443)

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

PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile.

Affected Versions:
PAN-OS 10.1 versions earlier than PAN-OS 10.1.3
PAN-OS 10.0 versions earlier than PAN-OS 10.0.8
PAN-OS 9.1 versions earlier than PAN-OS 9.1.12
PAN-OS 9.0 all versions
PAN-OS 8.1 versions earlier than PAN-OS 8.1.21


QID Detection Logic (Authenticated):

This QID looks for the vulnerable version of PAN-OS

NOTE:This issue is applicable only when you configure exceptions to URL filtering either by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile as per https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/url-filtering/block-and-allow-lists.html.

PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile.

  • CVSS V3 rated as High - 6.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution

    Refer to PAN-174443 for more information about patching this vulnerability.



    Workaround:
    Add a forward slash (/) at the end of the hostname pattern for all entries in the custom URL category list or the external dynamic list (EDL). For example: example.com/ will not match example.com.website.test

    Vendor References

    CVEs related to QID 730349

    CVE-2022-0011 |
    Software Advisories
    Advisory ID Software Component Link
    PAN-174443 URL Logo security.paloaltonetworks.com/CVE-2022-0011
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