Vulnerability-Lookup

CNVD-2021-26206

Vulnerability from cnvd - Published: 2021-04-09

Title

GNU C Library存在未明漏洞（CNVD-2021-26206）

Description

GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。Library是其中的一个库。 GNU C Library (aka glibc) 2.2之前版本存在安全漏洞。该漏洞源于缺少关于删除树的根后未指定的tdelete返回值的声明，攻击者可利用该漏洞在开发人员未意识到的应用程序中访问悬空指针1999年以来的文档更新。

Severity

高

Patch Name

GNU C Library存在未明漏洞（CNVD-2021-26206）的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz

Reference

https://nvd.nist.gov/vuln/detail/CVE-1999-0199

Impacted products

Name
Gnu GNU C Library (aka glibc) <2.2

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-1999-0199",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-1999-0199"
    }
  },
  "description": "GNU C Library\uff08glibc\uff0clibc6\uff09\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u3002Library\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u5e93\u3002\n\nGNU C Library (aka glibc) 2.2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f3a\u5c11\u5173\u4e8e\u5220\u9664\u6811\u7684\u6839\u540e\u672a\u6307\u5b9a\u7684tdelete\u8fd4\u56de\u503c\u7684\u58f0\u660e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5f00\u53d1\u4eba\u5458\u672a\u610f\u8bc6\u5230\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8bbf\u95ee\u60ac\u7a7a\u6307\u94881999\u5e74\u4ee5\u6765\u7684\u6587\u6863\u66f4\u65b0\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1ahttps://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-26206",
  "openTime": "2021-04-09",
  "patchDescription": "GNU C Library\uff08glibc\uff0clibc6\uff09\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u3002Library\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u5e93\u3002\r\n\r\nGNU C Library (aka glibc) 2.2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f3a\u5c11\u5173\u4e8e\u5220\u9664\u6811\u7684\u6839\u540e\u672a\u6307\u5b9a\u7684tdelete\u8fd4\u56de\u503c\u7684\u58f0\u660e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5f00\u53d1\u4eba\u5458\u672a\u610f\u8bc6\u5230\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8bbf\u95ee\u60ac\u7a7a\u6307\u94881999\u5e74\u4ee5\u6765\u7684\u6587\u6863\u66f4\u65b0\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 C Library\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-26206\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Gnu GNU C Library (aka glibc) \u003c2.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-1999-0199",
  "serverity": "\u9ad8",
  "submitTime": "2020-10-23",
  "title": "GNU C Library\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-26206\uff09"
}

CVE-1999-0199 (GCVE-0-1999-0199)

Vulnerability from cvelistv5 – Published: 2020-10-06 12:49 – Updated: 2024-08-01 16:27

Summary

manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree's root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2350 records in the last 180 days details

References

3 references

URL	Tags
https://www.cee.studio/tdelete.html	x_refsource_MISC
https://github.com/bminor/glibc/commit/2864e76705…	x_refsource_MISC
https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz	x_refsource_MISC

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-01T16:27:57.864Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.cee.studio/tdelete.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree\u0027s root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-06T12:49:43.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.cee.studio/tdelete.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40"
        },
        {
          "tags": [
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          ],
          "url": "https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-1999-0199",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
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          }
        },
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        "problemtype": {
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        },
        "references": {
          "reference_data": [
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              "name": "https://www.cee.studio/tdelete.html",
              "refsource": "MISC",
              "url": "https://www.cee.studio/tdelete.html"
            },
            {
              "name": "https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40",
              "refsource": "MISC",
              "url": "https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40"
            },
            {
              "name": "https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz",
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              "url": "https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz"
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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.

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.

Action not permitted

CNVD-2021-26206

CVE-1999-0199 (GCVE-0-1999-0199)

Tags

Sightings

Nomenclature

Related by attack behaviour