Vulnerability-Lookup

CNVD-2025-23735

Vulnerability from cnvd - Published: 2025-10-14

Title

Gnu glibc拒绝服务漏洞

Description

Gnu glibc是Linux系统中用于实现C语言标准库的核心组件，为应用程序提供底层API支持，遵循POSIX和ISO C标准。 Gnu glibc存在拒绝服务漏洞，该漏洞源于GNU C库中的end_pattern允许上下文相关攻击，攻击者可利用该漏洞导致应用程序因崩溃而拒绝服务。

Severity

中

Patch Name

Gnu glibc拒绝服务漏洞的补丁

Patch Description

Gnu glibc是Linux系统中用于实现C语言标准库的核心组件，为应用程序提供底层API支持，遵循POSIX和ISO C标准。 Gnu glibc存在拒绝服务漏洞，该漏洞源于GNU C库中的end_pattern允许上下文相关攻击，攻击者可利用该漏洞导致应用程序因崩溃而拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网： https://sourceware.org/bugzilla/show_bug.cgi?id=18036

Reference

https://nvd.nist.gov/vuln/detail/CVE-2015-20109

Impacted products

Name
Gnu glibc <2.22

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-20109",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2015-20109"
    }
  },
  "description": "Gnu glibc\u662fLinux\u7cfb\u7edf\u4e2d\u7528\u4e8e\u5b9e\u73b0C\u8bed\u8a00\u6807\u51c6\u5e93\u7684\u6838\u5fc3\u7ec4\u4ef6\uff0c\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u5e95\u5c42API\u652f\u6301\uff0c\u9075\u5faaPOSIX\u548cISO C\u6807\u51c6\u3002\n\nGnu glibc\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eGNU C\u5e93\u4e2d\u7684end_pattern\u5141\u8bb8\u4e0a\u4e0b\u6587\u76f8\u5173\u653b\u51fb\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5e94\u7528\u7a0b\u5e8f\u56e0\u5d29\u6e83\u800c\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51\uff1a\r\nhttps://sourceware.org/bugzilla/show_bug.cgi?id=18036",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-23735",
  "openTime": "2025-10-14",
  "patchDescription": "Gnu glibc\u662fLinux\u7cfb\u7edf\u4e2d\u7528\u4e8e\u5b9e\u73b0C\u8bed\u8a00\u6807\u51c6\u5e93\u7684\u6838\u5fc3\u7ec4\u4ef6\uff0c\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u5e95\u5c42API\u652f\u6301\uff0c\u9075\u5faaPOSIX\u548cISO C\u6807\u51c6\u3002\r\n\r\nGnu glibc\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eGNU C\u5e93\u4e2d\u7684end_pattern\u5141\u8bb8\u4e0a\u4e0b\u6587\u76f8\u5173\u653b\u51fb\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5e94\u7528\u7a0b\u5e8f\u56e0\u5d29\u6e83\u800c\u62d2\u7edd\u670d\u52a1\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": "Gnu glibc\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Gnu glibc \u003c2.22"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2015-20109",
  "serverity": "\u4e2d",
  "submitTime": "2023-08-25",
  "title": "Gnu glibc\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2015-20109 (GCVE-0-2015-20109)

Vulnerability from cvelistv5 – Published: 2023-06-25 00:00 – Updated: 2024-11-27 19:50

Summary

end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.

Severity

No CVSS data available.

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-27 19:50 UTC

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=18036
https://security.netapp.com/advisory/ntap-2023073…

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T08:58:26.522Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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            ],
            "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=18036"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230731-0009/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2015-20109",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-27T19:50:07.473195Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-27T19:50:15.593Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "n/a",
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              "type": "text"
            }
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      "providerMetadata": {
        "dateUpdated": "2023-07-31T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
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        {
          "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=18036"
        },
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          "url": "https://security.netapp.com/advisory/ntap-20230731-0009/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2015-20109",
    "datePublished": "2023-06-25T00:00:00.000Z",
    "dateReserved": "2023-06-25T00:00:00.000Z",
    "dateUpdated": "2024-11-27T19:50:15.593Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.