CVE-2023-22633 Denial of service in FortiNAC

What is CVE-2023-22633?

CVE-2023-22633 is a high-severity denial of service vulnerability in Fortinet FortiNAC, published on 13 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An improper permissions, privileges, and access controls vulnerability [CWE-264] in FortiNAC-F 7.2.0, FortiNAC 9.4.1 and below, 9.2.6 and below, 9.1.8 and below, 8.8.0 all versions 8.7.0 all versions may allow an unauthenticated attacker to perform a DoS attack on the device via client-secure renegotiation.

Weakness: CWE-264

Which versions are affected by CVE-2023-22633?

It affects 2 products.

Products include Fortinet Fortinac, Fortinet Fortinac-F.

How do I fix CVE-2023-22633?

No fix has been published for CVE-2023-22633 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-2023-22633 being exploited?

There is no known exploitation of CVE-2023-22633 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiNAC

• CVE-2022-39952 Path traversal in FortiNAC Critical 9.8
• CVE-2023-33299 Deserialization in FortiNAC Critical 9.6
• CVE-2022-26117 Hardcoded credentials in Fortinet FortiNAC High 8.8
• CVE-2022-38375 Missing authorization in FortiNAC High 8.6
• CVE-2022-39953 Privilege escalation in FortiNAC High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9gr9-452c-98q9.