CVE-2020-2020 Cortex XDR Agent: Exceptional condition denial-of-service (DoS)
A local authenticated user can prevent the Cortex XDR Agent from starting by creating specific files, causing a persistent denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-2020?
CVE-2020-2020 is a medium-severity denial of service vulnerability in Palo Alto Networks Cortex XDR Agent, published on 9 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An improper handling of exceptional conditions vulnerability in Cortex XDR Agent allows a local authenticated Windows user to create files in the software's internal program directory that prevents the Cortex XDR Agent from starting. The exceptional condition is persistent and prevents Cortex XDR Agent from starting when the software or machine is restarted. This issue impacts: Cortex XDR Agent 5.0 versions earlier than 5.0.10; Cortex XDR Agent 6.1 versions earlier than 6.1.7; Cortex XDR Agent 7.0 versions earlier than 7.0.3; Cortex XDR Agent 7.1 versions earlier than 7.1.2.
Weakness: CWE-755
Which versions are affected by CVE-2020-2020?
It affects 1 product.
Products include Paloaltonetworks Cortex Xdr Agent.
How do I fix CVE-2020-2020?
No fix has been published for CVE-2020-2020 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-2020-2020 being exploited?
There is no known exploitation of CVE-2020-2020 in the wild and no public exploit code.
Other vulnerabilities in Palo Alto Networks Cortex XDR Agent
- CVE-2022-0015 Cortex XDR Agent: An Uncontrolled Search Path Element Leads to Local Privilege Escalation (PE) Vulnerability
- CVE-2021-3042 Cortex XDR Agent: Improper Control of User-Controlled File Leads to Local Privilege Escalation
- CVE-2021-3041 Cortex XDR Agent: Improper control of user-controlled file leads to local privilege escalation
- CVE-2020-2049 Cortex XDR Agent: Improper control of loaded DLL leads to local privilege escalation
- CVE-2024-5909 Cortex XDR Agent: Local Windows User Can Disable the Agent
Sources
Also known as GHSA-rj77-cp45-4q8h.