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, making it more susceptible to brute force attacks.
| 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.
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]