Avoid type errors in EAI-related name check logic. #652
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The incorrectly typed data is read only, used in a compare operation, so neither remote code execution, nor memory content disclosure were possible. However, applications performing certificate name checks were vulnerable to denial of service. The GENERAL_TYPE data type is a union, and we must take care to access the correct member, based on `gen->type`, not all the member fields have the same structure, and a segfault is possible if the wrong member field is read. The code in question was lightly refactored with the intent to make it more obviously correct. Fixes CVE-2024-6119 (cherry picked from commit 06d1dc3fa96a2ba5a3e22735a033012aadc9f0d6)
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The incorrectly typed data is read only, used in a compare operation, so neither remote code execution, nor memory content disclosure were possible. However, applications performing certificate name checks were vulnerable to denial of service.
The GENERAL_TYPE data type is a union, and we must take care to access the correct member, based on
gen->type, not all the member fields have the same structure, and a segfault is possible if the wrong member field is read.The code in question was lightly refactored with the intent to make it more obviously correct.
Fixes CVE-2024-6119
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