CVE-2026-111438 (GCVE-0-2026-111438)
Vulnerability from cvelistv5
Published
2026-10-19 08:08
Modified
2026-10-19 17:22
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-288 - Authentication bypass using an alternate path or channel
Summary
在 openGauss-server 的 src/common/backend/libpq/hba.cpp 中，复制连接认证存在访问控制绕过。hba_getauthmethod() 在处理 HADR/SW 复制发送方时，不要求 is_node_internal_connection()，直接调用 check_hba_replication()。check_hba_replication() 仅按 replication 标记做弱匹配，缺少普通 check_hba() 中的远程 trust 禁止等完整校验。因此，非内部网络的 HADR/SW 复制连接可绕过内部连接限制和完整 pg_hba 策略完成认证，进而通过复制协议读取备份与日志数据。 此问题随 HADR 复制发送方绕过内部连接校验进入代码，自 3.0.0 起即存在。受影响版本包括 3.0.x、3.1.x、5.0.x、5.1.0、6.0.x，以及 7.0.0-RC1、7.0.0-RC2、7.0.0-RC3。该问题已在 7.0.0-LTS版本修复，通过要求 HADR/SW 复制发送方必须经过 is_node_internal_connection 校验，使外部复制连接改走普通 check_hba() 并触发禁止远程 trust 策略。修复pr见https://gitcode.com/opengauss/openGauss-server/pull/9757。
References
Impacted products
Vendor Product Version
openGauss-server openGauss-server Version: 3.0.0-3.0.5
Version: 3.1.0-3.1.1
Version: 5.0.0-RC1
Version: 5.0.0-5.0.3
Version: 6.0.0-RC1
Version: 6.0.0-6.0.6
Version: 7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3
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\\u590d\\u5236\\u53d1\\u9001\\u65b9\\u5fc5\\u987b\\u7ecf\\u8fc7 is_node_internal_connection \\u6821\\u9a8c\\uff0c\\u4f7f\\u5916\\u90e8\\u590d\\u5236\\u8fde\\u63a5\\u6539\\u8d70\\u666e\\u901a check_hba() \\u5e76\\u89e6\\u53d1\\u7981\\u6b62\\u8fdc\\u7a0b trust \\u7b56\\u7565\\u3002\\u4fee\\u590dpr\\u89c1https://gitcode.com/opengauss/openGauss-server/pull/9757\\u3002\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/div\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-288\", \"description\": \"CWE-288 Authentication bypass using an alternate path or channel\"}]}], \"providerMetadata\": {\"orgId\": \"a1a479f7-907b-4ae8-a999-9148cadc9224\", \"shortName\": \"openGauss\", \"dateUpdated\": \"2026-10-19T08:08:03.265Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-111438\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T17:22:23.532Z\", \"dateReserved\": \"2026-10-16T03:04:53.420Z\", \"assignerOrgId\": \"a1a479f7-907b-4ae8-a999-9148cadc9224\", \"datePublished\": \"2026-10-19T08:08:03.265Z\", \"assignerShortName\": \"openGauss\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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