An improper restriction of excessive authentication attempts vulnerability [CWE-307] in FortiMail webmail version 7.2.0 through 7.2.4, 7.0.0 through 7.0.6 and before 6.4.8 may allow an unauthenticated attacker to perform a brute force attack on the affected endpoints via repeated login attempts.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fortimail | Fortinet | 6.2.0 (including) | 6.2.9 (including) |
| Fortimail | Fortinet | 6.4.0 (including) | 6.4.8 (including) |
| Fortimail | Fortinet | 7.0.0 (including) | 7.0.6 (including) |
| Fortimail | Fortinet | 7.2.0 (including) | 7.2.4 (including) |
| Fortimail | Fortinet | 7.4.0 (including) | 7.4.0 (including) |
Common protection mechanisms include:
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]