Very Large Unicode Strings
| Item | Description |
|---|---|
| Full Fuzzer Name | VeryLargeUnicodeStringsInHeadersFuzzer |
| Log Key | VLUSIH |
| Description | This fuzzer will send very large strings with random Unicode characters in headers. The expectation is that APIs will reject the request as invalid as they might potentially break downstream systems. Furthermore, APIs should update their specs to define clear boundaries (minimum, maximum, minLength, maxLength). |
| Enabled by default? | Yes |
| Target header types | All |
| Expected result when fuzzed header is required | 4XX |
| Expected result when fuzzed header is optional | 4XX |
| Fuzzing logic | Iteratively replaces headers with very large unicode strings with more than 40 000 characters. The fuzzer generates both printable and non-printable Unicode characters. |
| Conditions when this fuzzer will be skipped | None |
| HTTP methods that will be skipped | None |
| Reporting | Reports error if: 1. response code is 404; 2. response code is documented, but not expected; 3. any unexpected exception. Reports warn if: 1. response code is expected and documented, but not matches response schema; 2. response code is expected, but not documented; 3. response code is 501. Reports success if: 1. response code is expected, documented and matches response schema. |