CVE-2020-2039

PAN-OS: Management web interface denial-of-service (DoS) through unauthenticated file upload

Description

An uncontrolled resource consumption vulnerability in Palo Alto Networks PAN-OS allows for a remote unauthenticated user to upload temporary files through the management web interface that are not properly deleted after the request is finished. It is possible for an attacker to disrupt the availability of the management web interface by repeatedly uploading files until available disk space is exhausted. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.16; PAN-OS 9.0 versions earlier than PAN-OS 9.0.10; PAN-OS 9.1 versions earlier than PAN-OS 9.1.4; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1.

Remediation

Solution:

  • This issue is fixed in PAN-OS 8.1.16, PAN-OS 9.0.10, PAN-OS 9.1.4, PAN-OS 10.0.1, and all later PAN-OS versions.

Workaround:

  • This issue impacts the PAN-OS management web interface but you can mitigate the impact of this issue by following best practices for securing the PAN-OS management web interface. Please review the Best Practices for Securing Administrative Access in the PAN-OS technical documentation, available at https://docs.paloaltonetworks.com/best-practices.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.95% Top 10%
Vendor Advisory paloaltonetworks.com
Affected: Palo Alto Networks PAN-OS
Published at:
Updated at:

References

Link Tags
https://security.paloaltonetworks.com/CVE-2020-2039 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-2039?
CVE-2020-2039 has been scored as a medium severity vulnerability.
How to fix CVE-2020-2039?
To fix CVE-2020-2039: This issue is fixed in PAN-OS 8.1.16, PAN-OS 9.0.10, PAN-OS 9.1.4, PAN-OS 10.0.1, and all later PAN-OS versions.
Is CVE-2020-2039 being actively exploited in the wild?
It is possible that CVE-2020-2039 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-2039?
CVE-2020-2039 affects Palo Alto Networks PAN-OS.
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