CVE-2020-2039 PAN-OS: Management web interface denial-of-service (DoS) through unauthenticated file upload

Medium 5.3 Published 9 Sep 2020 Updated 16 Sep 2024

Unauthenticated attackers can exhaust disk space via repeated file uploads, causing denial of service on the PAN-OS management interface.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-2039?

CVE-2020-2039 is a medium-severity denial of service vulnerability in Paloaltonetworks Pan-Os, published on 9 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-400

Which versions are affected by CVE-2020-2039?

It affects 1 product.

Products include Paloaltonetworks Pan-Os.

How do I fix CVE-2020-2039?

No fix has been published for CVE-2020-2039 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-2039 being exploited?

There is no known exploitation of CVE-2020-2039 in the wild and no public exploit code.

All Paloaltonetworks Pan-Os vulnerabilities

Sources

Also known as GHSA-x42c-7gjh-r9fx.