{"record":{"id":"29e30df9d0bed3c3","repo":"iflytek/astron-agent","slug":"wechat-message-signature-verification-functionality-needs-to","errorCode":null,"errorMessage":"WeChat message signature verification functionality needs to be implemented","messagePattern":"WeChat message signature verification functionality needs to be implemented","errorType":"console","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"console/backend/hub/src/main/java/com/iflytek/astron/console/hub/util/wechat/WechatMessageCrypto.java","lineNumber":77,"sourceCode":"        }\n    }\n\n    /**\n     * Verify message signature\n     *\n     * @param signature Signature\n     * @param timestamp Timestamp\n     * @param nonce Random number\n     * @return Whether verification passed\n     */\n    public boolean verifySignature(String signature, String timestamp, String nonce) {\n        if (!StringUtils.hasText(signature) || !StringUtils.hasText(timestamp) || !StringUtils.hasText(nonce)) {\n            return false;\n        }\n\n        try {\n            // TODO: Implement actual signature verification logic here\n            log.warn(\"WeChat message signature verification functionality needs to be implemented\");\n            return true; // Temporarily return true\n\n        } catch (Exception e) {\n            log.error(\"WeChat message signature verification failed: signature={}, timestamp={}, nonce={}\",\n                    signature, timestamp, nonce, e);\n            return false;\n        }\n    }\n}\n","sourceCodeStart":59,"sourceCodeEnd":87,"githubUrl":"https://github.com/iflytek/astron-agent/blob/5e758547a83371a5a4b29dadf4ac03e8dd527635/console/backend/hub/src/main/java/com/iflytek/astron/console/hub/util/wechat/WechatMessageCrypto.java#L59-L87","documentation":"verifySignature is an unimplemented stub that logs this warning and returns true unconditionally (after only checking that the three inputs are non-blank). It is supposed to validate WeChat's msgSignature = SHA1(sort(token, timestamp, nonce, encrypt)). Because it always returns true, every callback — including forged ones — is accepted as authentic.","triggerScenarios":"Any call to verifySignature(signature, timestamp, nonce, ...) with all three parameters non-empty; the try block immediately hits the TODO and returns true.","commonSituations":"Configuring a WeChat component callback URL; security review or penetration test reveals forged callbacks are accepted; duplicated messages replayed by attackers are treated as valid.","solutions":["Implement the official check: compute SHA1 over the lexicographically sorted strings [token, timestamp, nonce, encryptMsg] and compare with the provided signature using a constant-time comparison (MessageDigest.isEqual).","Alternatively instantiate WXBizMsgCrypt.checkSignature(token, timestamp, nonce, encrypt) from the official WeChat SDK sample.","As an interim hardening, remove the unconditional `return true` and return false (rejecting all callbacks) until the real implementation lands, since silent-pass is a security hole."],"exampleFix":"// before\nlog.warn(\"WeChat message signature verification functionality needs to be implemented\");\nreturn true; // Temporarily return true\n// after\nString calculated = WechatSha1.getSignature(token, timestamp, nonce, encryptMsg);\nreturn MessageDigest.isEqual(calculated.getBytes(UTF_8), signature.getBytes(UTF_8));","handlingStrategy":"validation","validationCode":"boolean looksLikeWeChatCallback(String signature, String timestamp, String nonce, String encrypt) {\n    return signature != null && !signature.isBlank()\n        && timestamp != null && timestamp.matches(\"\\\\d{10}\")\n        && nonce != null && !nonce.isBlank();\n}","typeGuard":null,"tryCatchPattern":"try {\n    if (!crypto.verifySignature(sig, ts, nonce, encrypt)) {\n        return ResponseEntity.status(403).build(); // reject forgeries\n    }\n} catch (Exception e) {\n    return ResponseEntity.status(403).build();\n}","preventionTips":["Never deploy a signature verifier that unconditionally returns true — gate the endpoint on a config flag 'wechat.crypto.enabled'.","Add a security test asserting forged signatures are rejected (HTTP 403).","Compute the expected SHA1 signature independently in a test and compare with verifySignature's verdict."],"tags":["wechat","signature-verification","security","not-implemented"],"backgroundTag":"method-not-implemented","analyzedSha":"5e758547a83371a5a4b29dadf4ac03e8dd527635","analyzedAt":"2026-09-12T08:03:51.356Z","contentChangedAt":"2026-09-12T08:03:51.356Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}