An issue was discovered in iXsystems FreeNAS (and TrueNAS) 11.2 before 11.2-u8 and 11.3 before 11.3-U1. It allows a denial of service. The login authentication component has no limits on the length of an authentication message or the rate at which such messages are sent.
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 |
|---|---|---|---|
| Freenas_firmware | Ixsystems | 11.2 (including) | 11.2 (including) |
| Freenas_firmware | Ixsystems | 11.2-u1 (including) | 11.2-u1 (including) |
| Freenas_firmware | Ixsystems | 11.2-u2 (including) | 11.2-u2 (including) |
| Freenas_firmware | Ixsystems | 11.2-u2.1 (including) | 11.2-u2.1 (including) |
| Freenas_firmware | Ixsystems | 11.2-u3 (including) | 11.2-u3 (including) |
| Freenas_firmware | Ixsystems | 11.2-u4 (including) | 11.2-u4 (including) |
| Freenas_firmware | Ixsystems | 11.2-u4.1 (including) | 11.2-u4.1 (including) |
| Freenas_firmware | Ixsystems | 11.2-u5 (including) | 11.2-u5 (including) |
| Freenas_firmware | Ixsystems | 11.2-u5.1 (including) | 11.2-u5.1 (including) |
| Freenas_firmware | Ixsystems | 11.2-u6 (including) | 11.2-u6 (including) |
| Freenas_firmware | Ixsystems | 11.2-u6.1 (including) | 11.2-u6.1 (including) |
| Freenas_firmware | Ixsystems | 11.2-u7 (including) | 11.2-u7 (including) |
| Freenas_firmware | Ixsystems | 11.3 (including) | 11.3 (including) |
| Freenas_firmware | Ixsystems | 11.3-alpha1 (including) | 11.3-alpha1 (including) |
| Freenas_firmware | Ixsystems | 11.3-alpha2 (including) | 11.3-alpha2 (including) |
| Freenas_firmware | Ixsystems | 11.3-beta1 (including) | 11.3-beta1 (including) |
| Freenas_firmware | Ixsystems | 11.3-rc1 (including) | 11.3-rc1 (including) |
| Freenas_firmware | Ixsystems | 11.3-rc2 (including) | 11.3-rc2 (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]