QID 730192

Date Published: 2021-09-16

QID 730192: Palo Alto Networks PAN-OS Exceptional Condition Denial-of-Service Vulnerability (PAN-158723)

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

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. 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 9.1.9
PAN-OS 10.0 versions earlier than PAN-OS 10.0.5
QID Detection Logic (Authenticated):
This QID looks for the vulnerable version of PAN-OS via XML API.

NOTE:This issue is applicable only if GTP security is configured on the firewall.

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.1 severity.
    • Solution

    Refer to PAN-158723 for more information about patching this vulnerability.Workaround:
    Enable signatures for Unique Threat ID 91593 on traffic processed by the firewall to block attacks against CVE-2021-3053.

    Vendor References

    CVEs related to QID 730192

    CVE-2021-3053 |
    Software Advisories
    Advisory ID Software Component Link
    PAN-158723 URL Logo security.paloaltonetworks.com/CVE-2021-3053
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