{
  "id": "security/tls-1-0-protocol-deprecated",
  "signature": "TLS 1.0 connection attempt rejected: protocol version not supported",
  "signature_zh": "TLS 1.0 连接尝试被拒绝：协议版本不受支持",
  "regex": "TLSv1(?:\\.[01])?.*(?:not supported|disabled|deprecated|handshake failure)",
  "domain": "security",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "The server or client only supports TLS 1.0, which is deprecated and disabled by modern security policies, leading to handshake failure.",
  "root_cause_type": "generic",
  "root_cause_zh": "服务器或客户端仅支持 TLS 1.0，而现代安全策略已弃用并禁用它，导致握手失败。",
  "versions": [
    {
      "version": "OpenSSL 1.1.1",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "OpenSSL 3.0",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Nginx 1.18",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Java 11",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Java 17",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Python 3.8",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Disabling TLS 1.0 on the server without upgrading the client breaks compatibility for legacy clients.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Adding TLS 1.0 as a cipher suite doesn't work; cipher suites are separate from protocol versions.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Restarting the service without changing the TLS configuration doesn't resolve the version mismatch.",
      "fail_rate": 0.4,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Upgrade the client to support TLS 1.2 or higher. For OpenSSL: `openssl s_client -tls1_2 -connect host:port` to test.",
      "success_rate": 0.9,
      "how": "Upgrade the client to support TLS 1.2 or higher. For OpenSSL: `openssl s_client -tls1_2 -connect host:port` to test.",
      "condition": "",
      "sources": []
    },
    {
      "action": "If the client cannot be upgraded, configure the server to temporarily allow TLS 1.0 in a controlled environment, e.g., Nginx: `ssl_protocols TLSv1 TLSv1.1 TLSv1.2;` but use it only as a short-term mitigation.",
      "success_rate": 0.5,
      "how": "If the client cannot be upgraded, configure the server to temporarily allow TLS 1.0 in a controlled environment, e.g., Nginx: `ssl_protocols TLSv1 TLSv1.1 TLSv1.2;` but use it only as a short-term mitigation.",
      "condition": "",
      "sources": []
    },
    {
      "action": "For Java applications, set `-Djdk.tls.client.protocols=TLSv1.2` to force a newer protocol.",
      "success_rate": 0.85,
      "how": "For Java applications, set `-Djdk.tls.client.protocols=TLSv1.2` to force a newer protocol.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "升级客户端以支持 TLS 1.2 或更高版本。对于 OpenSSL：使用 `openssl s_client -tls1_2 -connect host:port` 进行测试。",
    "如果无法升级客户端，可在受控环境中临时允许 TLS 1.0，例如 Nginx 配置：`ssl_protocols TLSv1 TLSv1.1 TLSv1.2;` 但仅作为短期缓解措施。",
    "对于 Java 应用，设置 `-Djdk.tls.client.protocols=TLSv1.2` 以强制使用更新的协议。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://datatracker.ietf.org/doc/html/rfc8996",
  "official_doc_section": null,
  "error_code": "SSL_ERROR_PROTOCOL_VERSION_ALERT",
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.9,
  "resolvable": "true",
  "first_seen": "2024-01-20",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}