CVE-2023-26209 Denial of service in FortiDeceptor

Low 3.5 Published 9 Mar 2023 Updated 22 Oct 2024

Remote attackers can cause resource exhaustion and denial of service by sending excessive HTTP requests to the login form.

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-2023-26209?

CVE-2023-26209 is a low-severity denial of service vulnerability in Fortinet FortiDeceptor, published on 9 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiDeceptor 3.1.x and before allows a remote unauthenticated attacker to partially exhaust CPU and memory via sending numerous HTTP requests to the login form.

Weakness: CWE-307

Which versions are affected by CVE-2023-26209?

It affects 1 product.

Products include Fortinet Fortideceptor.

How do I fix CVE-2023-26209?

No fix has been published for CVE-2023-26209 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-2023-26209 being exploited?

There is no known exploitation of CVE-2023-26209 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-f96f-6pqr-vx9w.