FKIE_CVE-2026-111439

Vulnerability from fkie_nvd - Published: 2026-10-19 08:17 - Updated: 2026-10-19 20:56
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
在 openGauss-server的 src/common/backend/utils/adt/genfile.cpp 模块中，内置函数 pg_read_binary_file_blocks() 存在权限校验逻辑缺陷。该函数在入口处仅校验了起始块号（startBlockNum）和块数量（blockCount）的范围，随后直接调用底层文件读取例程 ReadBinaryFileBlocksFirstCall()。该底层例程仅执行了路径规范化检查以及针对 .. 路径遍历和数据目录边界的基本检查，缺失了对调用者数据库权限（如 SELECT 权限）的校验。此外，辅助函数 is_row_data_file() 也仅用于识别文件形态，未包含权限检查。因此，任何拥有普通数据库连接权限的用户，只要能够通过 pg_relation_filepath() 等函数获取到目标表的底层关系文件路径（例如压缩数据的 _compress 文件路径），即可无需具备该表的 SELECT 权限，直接读取表数据的二进制块。 此漏洞影响此前3.0.0到6.0.0间的所有版本及补丁版，并在7.0.0-LTS版本修复。修复patch详见：https://gitcode.com/opengauss/openGauss-server/pull/9374。
References
a1a479f7-907b-4ae8-a999-9148cadc9224https://gitcode.com/opengauss/openGauss-server/pull/9374
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
          "defaultStatus": "unaffected",
          "platforms": [
            "openEuler Centos"
          ],
          "product": "openGauss-server",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "unaffected",
              "version": "7.0.0-LTS"
            },
            {
              "status": "affected",
              "version": "3.0.0-3.0.5"
            },
            {
              "status": "affected",
              "version": "3.1.0-3.1.1"
            },
            {
              "status": "affected",
              "version": "5.0.0-RC1"
            },
            {
              "status": "affected",
              "version": "5.0.0-5.0.3"
            },
            {
              "status": "affected",
              "version": "5.1.0"
            },
            {
              "status": "affected",
              "version": "6.0.0-RC1"
            },
            {
              "status": "affected",
              "version": "6.0.0-6.0.6"
            },
            {
              "status": "affected",
              "version": "7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3"
            }
          ]
        }
      ],
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "\u5728 openGauss-server\u7684 src/common/backend/utils/adt/genfile.cpp \u6a21\u5757\u4e2d\uff0c\u5185\u7f6e\u51fd\u6570 pg_read_binary_file_blocks() \u5b58\u5728\u6743\u9650\u6821\u9a8c\u903b\u8f91\u7f3a\u9677\u3002\u8be5\u51fd\u6570\u5728\u5165\u53e3\u5904\u4ec5\u6821\u9a8c\u4e86\u8d77\u59cb\u5757\u53f7\uff08startBlockNum\uff09\u548c\u5757\u6570\u91cf\uff08blockCount\uff09\u7684\u8303\u56f4\uff0c\u968f\u540e\u76f4\u63a5\u8c03\u7528\u5e95\u5c42\u6587\u4ef6\u8bfb\u53d6\u4f8b\u7a0b ReadBinaryFileBlocksFirstCall()\u3002\u8be5\u5e95\u5c42\u4f8b\u7a0b\u4ec5\u6267\u884c\u4e86\u8def\u5f84\u89c4\u8303\u5316\u68c0\u67e5\u4ee5\u53ca\u9488\u5bf9 .. \u8def\u5f84\u904d\u5386\u548c\u6570\u636e\u76ee\u5f55\u8fb9\u754c\u7684\u57fa\u672c\u68c0\u67e5\uff0c\u7f3a\u5931\u4e86\u5bf9\u8c03\u7528\u8005\u6570\u636e\u5e93\u6743\u9650\uff08\u5982 SELECT \u6743\u9650\uff09\u7684\u6821\u9a8c\u3002\u6b64\u5916\uff0c\u8f85\u52a9\u51fd\u6570 is_row_data_file() \u4e5f\u4ec5\u7528\u4e8e\u8bc6\u522b\u6587\u4ef6\u5f62\u6001\uff0c\u672a\u5305\u542b\u6743\u9650\u68c0\u67e5\u3002\u56e0\u6b64\uff0c\u4efb\u4f55\u62e5\u6709\u666e\u901a\u6570\u636e\u5e93\u8fde\u63a5\u6743\u9650\u7684\u7528\u6237\uff0c\u53ea\u8981\u80fd\u591f\u901a\u8fc7 pg_relation_filepath() \u7b49\u51fd\u6570\u83b7\u53d6\u5230\u76ee\u6807\u8868\u7684\u5e95\u5c42\u5173\u7cfb\u6587\u4ef6\u8def\u5f84\uff08\u4f8b\u5982\u538b\u7f29\u6570\u636e\u7684 _compress \u6587\u4ef6\u8def\u5f84\uff09\uff0c\u5373\u53ef\u65e0\u9700\u5177\u5907\u8be5\u8868\u7684 SELECT \u6743\u9650\uff0c\u76f4\u63a5\u8bfb\u53d6\u8868\u6570\u636e\u7684\u4e8c\u8fdb\u5236\u5757\u3002\n\u6b64\u6f0f\u6d1e\u5f71\u54cd\u6b64\u524d3.0.0\u52306.0.0\u95f4\u7684\u6240\u6709\u7248\u672c\u53ca\u8865\u4e01\u7248\uff0c\u5e76\u57287.0.0-LTS\u7248\u672c\u4fee\u590d\u3002\u4fee\u590dpatch\u8be6\u89c1\uff1ahttps://gitcode.com/opengauss/openGauss-server/pull/9374\u3002"
    }
  ],
  "id": "CVE-2026-111439",
  "lastModified": "2026-10-19T20:56:36.663",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-111439",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-19T17:24:53.483125Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-19T08:17:02.130",
  "references": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "url": "https://gitcode.com/opengauss/openGauss-server/pull/9374"
    }
  ],
  "sourceIdentifier": "a1a479f7-907b-4ae8-a999-9148cadc9224",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "type": "Secondary"
    }
  ]
}



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