CWE-1297: Unprotected Confidential Information on Device is Accessible by OSAT Vendors
Description
The product does not adequately protect confidential information on the device from being accessed by Outsourced Semiconductor Assembly and Test (OSAT) vendors.
- Abstraction
- BaseA weakness specific enough to point to detection and prevention methods.
- Likelihood of exploit
- Not rated by MITRE
- Status
- Incomplete
Common consequences
- ConfidentialityIntegrityAccess ControlAuthenticationAuthorizationAvailabilityAccountabilityNon-Repudiation
Gain Privileges or Assume Identity; Bypass Protection Mechanism; Execute Unauthorized Code or Commands; Modify Memory; Modify Files or Directories
The impact depends on the confidential information itself and who is inadvertently granted access. For example, if the confidential information is a key that can unlock all the parts of a generation, the impact could be severe.
Potential mitigations
- Architecture and DesignEffectiveness: Moderate
Ensure that when an OSAT vendor is allowed to access test interfaces necessary for preproduction and returned parts, the vendor only pulls the minimal information necessary. Also, architect the product in such a way that, when an unlock device request comes, it only unlocks that specific part and not all the parts for that product line. Ensure that the product's non-volatile memory (NVM) is scrubbed of all confidential information and secrets before handing it over to an OSAT. Arrange to secure all communication between an OSAT facility and the chipmaker.