QID 580557

QID 580557: String Field Minimum Limit Response Mismatches Schema

In this scenario minimum values for string fields are tested for fields when defined. If the minimum values are not defined this test is skipped. Values less than the minimum defined in the swagger file for string fields are sent to the server for the endpoint being tested. The expectation is that the server will reject the request as invalid, if the length is lower than it's minimum limit specified.

Based on testing done using requests with values lower than the minimum defined in the swagger file it is determined that the minimum values defined for string fields are not enforced as expected. The response received for the request with lower values for string fields is not expected and does not match the response documented in the swagger file schema.

Enforcing the minimum value set on the field will help provide clarity to the API users and avoid abuse of the API by hackers. Enforcing limits help in mitigating resource exhaustion attacks. Mimatch with swagger schema results in lack of clarity to the API users.

CVSS V3 rated as High - 6.5 severity.

CVSS V2 rated as High - 6.4 severity.

Solution

Please update the API endpoint response to match the swagger schema definition or update the schema to match the server response.

Vendor References

CVEs related to QID 580557

Software Advisories

Advisory ID	Software	Component	Link

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