A specially crafted script could bypass the authentication of a maintenance port of Emerson DeltaV DCS Versions 11.3.1, 11.3.2, 12.3.1, 13.3.1, 14.3, R5.1, R6 and prior, which may allow an attacker to cause a denial of service.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Deltav | Emerson | r5.1 (including) | r6 (including) |
| Deltav | Emerson | 11.3.1 (including) | 11.3.1 (including) |
| Deltav | Emerson | 11.3.2 (including) | 11.3.2 (including) |
| Deltav | Emerson | 12.3.1 (including) | 12.3.1 (including) |
| Deltav | Emerson | 13.3.1 (including) | 13.3.1 (including) |
| Deltav | Emerson | 14.3 (including) | 14.3 (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 [REF-1482].
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]