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CVE-2026-14178

Estado: AplazadaMedia (5.9)—

openGauss 在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下，该字符串原本被分配在 SeqScan 的表达式上下文中；当 SeqScan 完成后，该内存上下文会被 reset，但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str，导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下，可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出；在实际运行环境中可能造成后端进程异常退出，影响数据库服务可用性，形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在，目前已在openGauss-server-7.0.0-RC3版本修复。由于 openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本，不会发布针对性补丁包，涉及版本升级至 openGauss-server-7.0.0-RC3或更新版本即可。

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Huawei — OpengaussAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-14178",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-14178",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-30T14:39:56.155795Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "affectedData": [
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC2",
          "versions": [
            {
              "status": "affected",
              "version": "openGauss-server-7.0.0-RC2"
            }
          ],
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC2",
          "defaultStatus": "affected"
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC1",
          "versions": [
            {
              "status": "affected",
              "version": "openGauss-server-7.0.0-RC1"
            }
          ],
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC1",
          "defaultStatus": "affected"
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC3",
          "versions": [
            {
              "status": "unaffected",
              "version": "openGauss-server-7.0.0-RC3"
            }
          ],
          "platforms": [
            "openEuler Centos"
          ],
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-06-30T14:16:25.963",
  "references": [
    {
      "url": "https://gitcode.com/opengauss/openGauss-server/pull/8877",
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "openGauss 在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下，该字符串原本被分配在 SeqScan 的表达式上下文中；当 SeqScan 完成后，该内存上下文会被 reset，但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str，导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下，可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出；在实际运行环境中可能造成后端进程异常退出，影响数据库服务可用性，形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在，目前已在openGauss-server-7.0.0-RC3版本修复。由于\nopenGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本，不会发布针对性补丁包，涉及版本升级至\nopenGauss-server-7.0.0-RC3或更新版本即可。"
    }
  ],
  "lastModified": "2026-06-30T15:16:51.783",
  "sourceIdentifier": "a1a479f7-907b-4ae8-a999-9148cadc9224"
}