CVE-2022-29056 Denial of service in FortiMail

What is CVE-2022-29056?

CVE-2022-29056 is a low-severity denial of service vulnerability in Fortinet FortiMail, 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 FortiMail version 6.4.0, version 6.2.0 through 6.2.4 and before 6.0.9 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-2022-29056?

It affects 1 product.

Products include Fortinet Fortimail.

How do I fix CVE-2022-29056?

No fix has been published for CVE-2022-29056 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-2022-29056 being exploited?

There is no known exploitation of CVE-2022-29056 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Fortinet FortiMail

• CVE-2026-104286 Fortinet FortiMail Path Traversal Exploited Critical 9.8
• CVE-2021-36166 Auth bypass in Fortinet FortiMail Critical 9.8
• CVE-2021-24007 SQL injection in Fortinet FortiMail Critical 9.8
• CVE-2020-9294 Auth bypass in FortiMail Critical 9.8
• CVE-2023-47539 Auth bypass in FortiMail Critical 9.0

Sources

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

Also known as GHSA-cvr2-h2fv-q36g.