Vulnerability-Lookup

CNVD-2026-30684

Vulnerability from cnvd - Published: 2026-08-04

Title

Huawei openGauss资源管理错误漏洞

Description

Huawei openGauss是中国Huawei公司开源的一款开源的关系型数据库管理系统，它具有多核高性能、全链路安全性、智能运维等企业级特性。 Huawei openGauss存在资源管理错误漏洞，该漏洞源于在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str；在 seqscan + sort 执行路径下，该字符串被分配在 SeqScan 的表达式上下文中，当 SeqScan 完成后内存上下文被 reset，但后续结果输出阶段 timestamp_out() 仍通过 CheckNlsFormat() 访问已释放的内存，导致释放后重用，攻击者可利用该漏洞在具备数据库SQL执行权限时，可构造特定to_timestamp(..., ..., nlsparam) 查询触发攻击，造成后端进程异常退出，影响服务可用性，形成拒绝服务风险。

Severity

中

Patch Name

Huawei openGauss资源管理错误漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://gitcode.com/opengauss/openGauss-server/pull/8877

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-14178

Impacted products

Name
['openGauss openGauss 7.0.0-RC2', 'openGauss openGauss 7.0.0-RC1']

Show details on source website

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-14178",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-14178"
    }
  },
  "description": "Huawei openGauss\u662f\u4e2d\u56fdHuawei\u516c\u53f8\u5f00\u6e90\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u5177\u6709\u591a\u6838\u9ad8\u6027\u80fd\u3001\u5168\u94fe\u8def\u5b89\u5168\u6027\u3001\u667a\u80fd\u8fd0\u7ef4\u7b49\u4f01\u4e1a\u7ea7\u7279\u6027\u3002\n\nHuawei openGauss\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u5e26 NLS \u53c2\u6570\u7684 to_timestamp \u8c03\u7528\u65f6\uff0cto_timestamp_with_fmt_nls() \u5c06 nls_fmt_str \u4fdd\u5b58\u5230 u_sess-\u003eparser_cxt.nls_fmt_str\uff1b\u5728 seqscan + sort \u6267\u884c\u8def\u5f84\u4e0b\uff0c\u8be5\u5b57\u7b26\u4e32\u88ab\u5206\u914d\u5728 SeqScan \u7684\u8868\u8fbe\u5f0f\u4e0a\u4e0b\u6587\u4e2d\uff0c\u5f53 SeqScan \u5b8c\u6210\u540e\u5185\u5b58\u4e0a\u4e0b\u6587\u88ab reset\uff0c\u4f46\u540e\u7eed\u7ed3\u679c\u8f93\u51fa\u9636\u6bb5 timestamp_out() \u4ecd\u901a\u8fc7 CheckNlsFormat() \u8bbf\u95ee\u5df2\u91ca\u653e\u7684\u5185\u5b58\uff0c\u5bfc\u81f4\u91ca\u653e\u540e\u91cd\u7528\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5177\u5907\u6570\u636e\u5e93SQL\u6267\u884c\u6743\u9650\u65f6\uff0c\u53ef\u6784\u9020\u7279\u5b9ato_timestamp(..., ..., nlsparam) \u67e5\u8be2\u89e6\u53d1\u653b\u51fb\uff0c\u9020\u6210\u540e\u7aef\u8fdb\u7a0b\u5f02\u5e38\u9000\u51fa\uff0c\u5f71\u54cd\u670d\u52a1\u53ef\u7528\u6027\uff0c\u5f62\u6210\u62d2\u7edd\u670d\u52a1\u98ce\u9669\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://gitcode.com/opengauss/openGauss-server/pull/8877",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-30684",
  "openTime": "2026-08-04",
  "patchDescription": "Huawei openGauss\u662f\u4e2d\u56fdHuawei\u516c\u53f8\u5f00\u6e90\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u5177\u6709\u591a\u6838\u9ad8\u6027\u80fd\u3001\u5168\u94fe\u8def\u5b89\u5168\u6027\u3001\u667a\u80fd\u8fd0\u7ef4\u7b49\u4f01\u4e1a\u7ea7\u7279\u6027\u3002\r\n\r\nHuawei openGauss\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u5e26 NLS \u53c2\u6570\u7684 to_timestamp \u8c03\u7528\u65f6\uff0cto_timestamp_with_fmt_nls() \u5c06 nls_fmt_str \u4fdd\u5b58\u5230 u_sess-\u003eparser_cxt.nls_fmt_str\uff1b\u5728 seqscan + sort \u6267\u884c\u8def\u5f84\u4e0b\uff0c\u8be5\u5b57\u7b26\u4e32\u88ab\u5206\u914d\u5728 SeqScan \u7684\u8868\u8fbe\u5f0f\u4e0a\u4e0b\u6587\u4e2d\uff0c\u5f53 SeqScan \u5b8c\u6210\u540e\u5185\u5b58\u4e0a\u4e0b\u6587\u88ab reset\uff0c\u4f46\u540e\u7eed\u7ed3\u679c\u8f93\u51fa\u9636\u6bb5 timestamp_out() \u4ecd\u901a\u8fc7 CheckNlsFormat() \u8bbf\u95ee\u5df2\u91ca\u653e\u7684\u5185\u5b58\uff0c\u5bfc\u81f4\u91ca\u653e\u540e\u91cd\u7528\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5177\u5907\u6570\u636e\u5e93SQL\u6267\u884c\u6743\u9650\u65f6\uff0c\u53ef\u6784\u9020\u7279\u5b9ato_timestamp(..., ..., nlsparam) \u67e5\u8be2\u89e6\u53d1\u653b\u51fb\uff0c\u9020\u6210\u540e\u7aef\u8fdb\u7a0b\u5f02\u5e38\u9000\u51fa\uff0c\u5f71\u54cd\u670d\u52a1\u53ef\u7528\u6027\uff0c\u5f62\u6210\u62d2\u7edd\u670d\u52a1\u98ce\u9669\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Huawei openGauss\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "openGauss openGauss 7.0.0-RC2",
      "openGauss openGauss 7.0.0-RC1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-14178",
  "serverity": "\u4e2d",
  "submitTime": "2026-07-08",
  "title": "Huawei openGauss\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2026-14178 (GCVE-0-2026-14178)

Vulnerability from cvelistv5 – Published: 2026-06-30 13:56 – Updated: 2026-06-30 14:40

Title

openGauss存在非法内存访问导致DoS漏洞

Summary

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。

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-30 14:39 UTC

CWE

CWE-416 - Use after free

Assigner

openGauss mitre root

References

1 reference

URL	Tags
https://gitcode.com/opengauss/openGauss-server/pu…

Impacted products

3 products

Vendor	Product	Version
openGauss-server	openGauss-server-7.0.0-RC2	Affected: openGauss-server-7.0.0-RC2
openGauss-server	openGauss-server-7.0.0-RC1	Affected: openGauss-server-7.0.0-RC1
openGauss-server	openGauss-server-7.0.0-RC3	Unaffected: openGauss-server-7.0.0-RC3

Date Public

2026-06-30 07:53

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-14178",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-30T14:39:56.155795Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-30T14:40:10.603Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC2",
          "defaultStatus": "affected",
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "product": "openGauss-server-7.0.0-RC2",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "affected",
              "version": "openGauss-server-7.0.0-RC2"
            }
          ]
        },
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC1",
          "defaultStatus": "affected",
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "product": "openGauss-server-7.0.0-RC1",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "affected",
              "version": "openGauss-server-7.0.0-RC1"
            }
          ]
        },
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "defaultStatus": "unaffected",
          "platforms": [
            "openEuler Centos"
          ],
          "product": "openGauss-server-7.0.0-RC3",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "unaffected",
              "version": "openGauss-server-7.0.0-RC3"
            }
          ]
        }
      ],
      "datePublic": "2026-06-30T07:53:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
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          ],
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        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-469",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-469 HTTP DoS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use after free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-30T13:56:16.846Z",
        "orgId": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "shortName": "openGauss"
      },
      "references": [
        {
          "url": "https://gitcode.com/opengauss/openGauss-server/pull/8877"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "openGauss\u5b58\u5728\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u5bfc\u81f4DoS\u6f0f\u6d1e",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a1a479f7-907b-4ae8-a999-9148cadc9224",
    "assignerShortName": "openGauss",
    "cveId": "CVE-2026-14178",
    "datePublished": "2026-06-30T13:56:16.846Z",
    "dateReserved": "2026-06-30T07:37:54.949Z",
    "dateUpdated": "2026-06-30T14:40:10.603Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.