An improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiOS version 7.2.0 through 7.2.3 and before 7.0.10, FortiProxy version 7.2.0 through 7.2.2 and before 7.0.8 administrative interface allows an attacker with a valid user account to perform brute-force attacks on other user accounts via injecting valid login sessions.
Weakness
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fortiproxy | Fortinet | 1.0.0 (including) | 2.0.9 (including) |
| Fortiproxy | Fortinet | 7.0.0 (including) | 7.0.8 (excluding) |
| Fortiproxy | Fortinet | 7.2.0 (including) | 7.2.2 (excluding) |
| Fortios | Fortinet | 6.2.0 (including) | 6.4.13 (excluding) |
| Fortios | Fortinet | 7.0.0 (including) | 7.0.11 (excluding) |
| Fortios | Fortinet | 7.2.0 (including) | 7.2.4 (excluding) |
Potential Mitigations
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 [REF-1482].
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/16.html
- https://cwe.mitre.org/data/definitions/49.html
- https://cwe.mitre.org/data/definitions/560.html
- https://cwe.mitre.org/data/definitions/565.html
- https://cwe.mitre.org/data/definitions/600.html
- https://cwe.mitre.org/data/definitions/652.html
- https://cwe.mitre.org/data/definitions/653.html