CVE-2022-29056
Published: 09 March 2023
Summary
CVE-2022-29056 is a low-severity Improper Restriction of Excessive Authentication Attempts (CWE-307) vulnerability in Fortinet Fortimail. Its CVSS base score is 3.7 (Low).
Operationally, ranked in the top 3.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A improper restriction of excessive authentication attempts vulnerability (CWE-307) affects Fortinet FortiMail versions 6.4.0, 6.2.0 through 6.2.4, and all releases before 6.0.9. The flaw resides in the web login interface and permits a remote attacker to submit repeated HTTP requests without authentication controls that would otherwise limit the volume of attempts.
An unauthenticated attacker with network access can send numerous requests to the login form, resulting in partial exhaustion of CPU and memory resources on the affected appliance. The CVSS 3.1 score of 3.7 reflects the high attack complexity and limited impact confined to availability.
Fortinet has published advisory FG-IR-20-078 detailing the issue and associated remediation guidance. The EPSS score has remained essentially flat near 0.24 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-33469
Vulnerability details
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…
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- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.
Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.