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Refine eab payload checking logic

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This commit is contained in:
Fang-Pen Lin
2025-11-07 09:20:47 -08:00
parent bf39f5eb17
commit 10054b3e4b
1 changed files with 30 additions and 32 deletions
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backend/src/ee/services/pki-acme/pki-acme-service.ts
+12 -14
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@@ -353,11 +353,19 @@ export const pkiAcmeServiceFactory = ({
kmsId: certificateManagerKmsId
});
const eabSecret = await kmsDecryptor({ cipherTextBlob: profile.acmeConfig!.encryptedEabSecret! });
let eabPayload: Uint8Array<ArrayBufferLike> | undefined;
let eabProtectedHeader: JWSHeaderParameters | undefined;
try {
const { payload: eabPayload, protectedHeader: eabProtectedHeader } = await flattenedVerify(
externalAccountBinding,
eabSecret
);
const result = await flattenedVerify(externalAccountBinding, eabSecret);
eabPayload = result.payload;
eabProtectedHeader = result.protectedHeader;
} catch (error) {
if (error instanceof errors.JWSInvalid) {
throw new AcmeMalformedError({ detail: "Invalid external account binding JWS payload" });
}
logger.error(error, "Unexpected error while verifying EAB JWS payload");
throw new AcmeServerInternalError({ detail: "Failed to verify EAB JWS payload" });
}
const { alg: eabAlg, kid: eabKid } = eabProtectedHeader!;
if (!["HS256", "HS384", "HS512"].includes(eabAlg!)) {
throw new AcmeMalformedError({ detail: "Invalid algorithm for external account binding JWS payload" });
@@ -383,16 +391,6 @@ export const pkiAcmeServiceFactory = ({
message: "External account binding public key thumbprint or algorithm mismatch"
});
}
} catch (error) {
if (error instanceof errors.JWSInvalid) {
throw new AcmeMalformedError({ detail: "Invalid external account binding JWS payload" });
}
if (error instanceof AcmeError) {
throw error;
}
logger.error(error, "Unexpected error while verifying EAB JWS payload");
throw new AcmeServerInternalError({ detail: "Failed to verify EAB JWS payload" });
}
const existingAccount: TPkiAcmeAccounts | null = await acmeAccountDAL.findByProfileIdAndPublicKeyThumbprintAndAlg(
profileId,