CWE-1293
Weakness AllowedMissing Source Correlation of Multiple Independent Data
Abstraction: Base · Status: Draft
The product relies on one source of data, preventing the ability to detect if an adversary has compromised a data source.
To operate successfully, a product sometimes has to implicitly trust the integrity of an information source. When information is implicitly signed, one can ensure that the data was not tampered in transit. This does not ensure that the information source was not compromised when responding to a request.
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Relationships and members
Modes of introduction
This flaw could be introduced during the design of the application or misconfiguration at run time by only specifying a single point of validation.
Such issues could be introduced during hardware implementation, then identified later during Testing or System Configuration phases.
This weakness could be introduced by intentionally failing all but one of the devices used to retrieve the data or by failing the devices that validate the data.
Content history
updated Description, Relationships
updated Description
updated Relationships
updated Mapping_Notes
updated References
updated Weakness_Ordinalities
updated Description, Potential_Mitigations
0 vulnerabilities reference this CWE, most recent first.
No vulnerabilities reference this CWE.
Mitigation
Design the system to use a Practical Byzantine fault method, to request information from multiple sources to verify the data and report on potentially compromised information sources. By requesting information from multiple sources, one can check if all of the data is the same. If they are not, the system should report the information sources that respond with a different or minority value as potentially compromised. If there are not enough answers to provide a majority or plurality of responses, the system should report all of the sources as potentially compromised. As the seriousness of the impact of incorrect integrity increases, so should the number of independent information sources that would need to be queried.
Mitigation
Failure to use a Practical Byzantine fault method when requesting data. Lack of place to report potentially compromised information sources. Relying on non-independent information sources for integrity checking. Failure to report information sources that respond in the minority to incident response procedures.
No CAPEC attack patterns related to this CWE.