msrc_cve-2021-20277
Vulnerability from csaf_microsoft
Published
2021-05-02 00:00
Modified
2025-05-27 00:00
Summary
A flaw was found in Samba's libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.



{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2021-20277 A flaw was found in Samba\u0027s libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-20277.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "A flaw was found in Samba\u0027s libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability.",
    "tracking": {
      "current_release_date": "2025-05-27T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T21:59:28.364Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2021-20277",
      "initial_release_date": "2021-05-02T00:00:00.000Z",
      "revision_history": [
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          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added samba to Azure Linux 3.0"
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        },
        {
          "date": "2024-10-23T00:00:00.000Z",
          "legacy_version": "1.8",
          "number": "9",
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        },
        {
          "date": "2024-10-24T00:00:00.000Z",
          "legacy_version": "1.9",
          "number": "10",
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        {
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        },
        {
          "date": "2024-10-28T00:00:00.000Z",
          "legacy_version": "2.3",
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        },
        {
          "date": "2024-11-01T00:00:00.000Z",
          "legacy_version": "2.7",
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        },
        {
          "date": "2024-11-02T00:00:00.000Z",
          "legacy_version": "2.8",
          "number": "19",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-04T00:00:00.000Z",
          "legacy_version": "2.9",
          "number": "20",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-05T00:00:00.000Z",
          "legacy_version": "3",
          "number": "21",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
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        {
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          "legacy_version": "3.3",
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          "summary": "Added samba to Azure Linux 3.0"
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        {
          "date": "2024-11-09T00:00:00.000Z",
          "legacy_version": "3.4",
          "number": "25",
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        },
        {
          "date": "2024-11-10T00:00:00.000Z",
          "legacy_version": "3.5",
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          "summary": "Added samba to Azure Linux 3.0"
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        },
        {
          "date": "2024-11-13T00:00:00.000Z",
          "legacy_version": "3.8",
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        },
        {
          "date": "2024-11-14T00:00:00.000Z",
          "legacy_version": "3.9",
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        },
        {
          "date": "2024-11-15T00:00:00.000Z",
          "legacy_version": "4",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-16T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-17T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-18T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-19T00:00:00.000Z",
          "legacy_version": "4.4",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-20T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
        },
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          "date": "2024-11-21T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
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          "date": "2024-11-25T00:00:00.000Z",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-26T00:00:00.000Z",
          "legacy_version": "5",
          "number": "41",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-27T00:00:00.000Z",
          "legacy_version": "5.1",
          "number": "42",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-28T00:00:00.000Z",
          "legacy_version": "5.2",
          "number": "43",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-29T00:00:00.000Z",
          "legacy_version": "5.3",
          "number": "44",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-11-30T00:00:00.000Z",
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          "number": "45",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-01T00:00:00.000Z",
          "legacy_version": "5.5",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-02T00:00:00.000Z",
          "legacy_version": "5.6",
          "number": "47",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-03T00:00:00.000Z",
          "legacy_version": "5.7",
          "number": "48",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-04T00:00:00.000Z",
          "legacy_version": "5.8",
          "number": "49",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-05T00:00:00.000Z",
          "legacy_version": "5.9",
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          "summary": "Added samba to Azure Linux 3.0"
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          "legacy_version": "6",
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          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-08T00:00:00.000Z",
          "legacy_version": "6.1",
          "number": "52",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-09T00:00:00.000Z",
          "legacy_version": "6.2",
          "number": "53",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-10T00:00:00.000Z",
          "legacy_version": "6.3",
          "number": "54",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-11T00:00:00.000Z",
          "legacy_version": "6.4",
          "number": "55",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-12T00:00:00.000Z",
          "legacy_version": "6.5",
          "number": "56",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-13T00:00:00.000Z",
          "legacy_version": "6.6",
          "number": "57",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-14T00:00:00.000Z",
          "legacy_version": "6.7",
          "number": "58",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-15T00:00:00.000Z",
          "legacy_version": "6.8",
          "number": "59",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-16T00:00:00.000Z",
          "legacy_version": "6.9",
          "number": "60",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-17T00:00:00.000Z",
          "legacy_version": "7",
          "number": "61",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-18T00:00:00.000Z",
          "legacy_version": "7.1",
          "number": "62",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-19T00:00:00.000Z",
          "legacy_version": "7.2",
          "number": "63",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-20T00:00:00.000Z",
          "legacy_version": "7.3",
          "number": "64",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-21T00:00:00.000Z",
          "legacy_version": "7.4",
          "number": "65",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-22T00:00:00.000Z",
          "legacy_version": "7.5",
          "number": "66",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-23T00:00:00.000Z",
          "legacy_version": "7.6",
          "number": "67",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-24T00:00:00.000Z",
          "legacy_version": "7.7",
          "number": "68",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-25T00:00:00.000Z",
          "legacy_version": "7.8",
          "number": "69",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-26T00:00:00.000Z",
          "legacy_version": "7.9",
          "number": "70",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-27T00:00:00.000Z",
          "legacy_version": "8",
          "number": "71",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-28T00:00:00.000Z",
          "legacy_version": "8.1",
          "number": "72",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-29T00:00:00.000Z",
          "legacy_version": "8.2",
          "number": "73",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-30T00:00:00.000Z",
          "legacy_version": "8.3",
          "number": "74",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2024-12-31T00:00:00.000Z",
          "legacy_version": "8.4",
          "number": "75",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-01T00:00:00.000Z",
          "legacy_version": "8.5",
          "number": "76",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-02T00:00:00.000Z",
          "legacy_version": "8.6",
          "number": "77",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-03T00:00:00.000Z",
          "legacy_version": "8.7",
          "number": "78",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-04T00:00:00.000Z",
          "legacy_version": "8.8",
          "number": "79",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-05T00:00:00.000Z",
          "legacy_version": "8.9",
          "number": "80",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-06T00:00:00.000Z",
          "legacy_version": "9",
          "number": "81",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-07T00:00:00.000Z",
          "legacy_version": "9.1",
          "number": "82",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-08T00:00:00.000Z",
          "legacy_version": "9.2",
          "number": "83",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-09T00:00:00.000Z",
          "legacy_version": "9.3",
          "number": "84",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-10T00:00:00.000Z",
          "legacy_version": "9.4",
          "number": "85",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-11T00:00:00.000Z",
          "legacy_version": "9.5",
          "number": "86",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-12T00:00:00.000Z",
          "legacy_version": "9.6",
          "number": "87",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-13T00:00:00.000Z",
          "legacy_version": "9.7",
          "number": "88",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-15T00:00:00.000Z",
          "legacy_version": "9.8",
          "number": "89",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-16T00:00:00.000Z",
          "legacy_version": "9.9",
          "number": "90",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-17T00:00:00.000Z",
          "legacy_version": "1",
          "number": "91",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-18T00:00:00.000Z",
          "legacy_version": "10.1",
          "number": "92",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-19T00:00:00.000Z",
          "legacy_version": "10.2",
          "number": "93",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-20T00:00:00.000Z",
          "legacy_version": "10.3",
          "number": "94",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-21T00:00:00.000Z",
          "legacy_version": "10.4",
          "number": "95",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-22T00:00:00.000Z",
          "legacy_version": "10.5",
          "number": "96",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-23T00:00:00.000Z",
          "legacy_version": "10.6",
          "number": "97",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-24T00:00:00.000Z",
          "legacy_version": "10.7",
          "number": "98",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-25T00:00:00.000Z",
          "legacy_version": "10.8",
          "number": "99",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-27T00:00:00.000Z",
          "legacy_version": "10.9",
          "number": "100",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-28T00:00:00.000Z",
          "legacy_version": "11",
          "number": "101",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-29T00:00:00.000Z",
          "legacy_version": "11.1",
          "number": "102",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-01-30T00:00:00.000Z",
          "legacy_version": "11.2",
          "number": "103",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-01T00:00:00.000Z",
          "legacy_version": "11.3",
          "number": "104",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-02T00:00:00.000Z",
          "legacy_version": "11.4",
          "number": "105",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-03T00:00:00.000Z",
          "legacy_version": "11.5",
          "number": "106",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-04T00:00:00.000Z",
          "legacy_version": "11.6",
          "number": "107",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-05T00:00:00.000Z",
          "legacy_version": "11.7",
          "number": "108",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-07T00:00:00.000Z",
          "legacy_version": "11.8",
          "number": "109",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-08T00:00:00.000Z",
          "legacy_version": "11.9",
          "number": "110",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-09T00:00:00.000Z",
          "legacy_version": "12",
          "number": "111",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-10T00:00:00.000Z",
          "legacy_version": "12.1",
          "number": "112",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-11T00:00:00.000Z",
          "legacy_version": "12.2",
          "number": "113",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-12T00:00:00.000Z",
          "legacy_version": "12.3",
          "number": "114",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-13T00:00:00.000Z",
          "legacy_version": "12.4",
          "number": "115",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-14T00:00:00.000Z",
          "legacy_version": "12.5",
          "number": "116",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-15T00:00:00.000Z",
          "legacy_version": "12.6",
          "number": "117",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-16T00:00:00.000Z",
          "legacy_version": "12.7",
          "number": "118",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-17T00:00:00.000Z",
          "legacy_version": "12.8",
          "number": "119",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-18T00:00:00.000Z",
          "legacy_version": "12.9",
          "number": "120",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-19T00:00:00.000Z",
          "legacy_version": "13",
          "number": "121",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-20T00:00:00.000Z",
          "legacy_version": "13.1",
          "number": "122",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-21T00:00:00.000Z",
          "legacy_version": "13.2",
          "number": "123",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-22T00:00:00.000Z",
          "legacy_version": "13.3",
          "number": "124",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-23T00:00:00.000Z",
          "legacy_version": "13.4",
          "number": "125",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-24T00:00:00.000Z",
          "legacy_version": "13.5",
          "number": "126",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-25T00:00:00.000Z",
          "legacy_version": "13.6",
          "number": "127",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-26T00:00:00.000Z",
          "legacy_version": "13.7",
          "number": "128",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-27T00:00:00.000Z",
          "legacy_version": "13.8",
          "number": "129",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-02-28T00:00:00.000Z",
          "legacy_version": "13.9",
          "number": "130",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-01T00:00:00.000Z",
          "legacy_version": "14",
          "number": "131",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-02T00:00:00.000Z",
          "legacy_version": "14.1",
          "number": "132",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-03T00:00:00.000Z",
          "legacy_version": "14.2",
          "number": "133",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-04T00:00:00.000Z",
          "legacy_version": "14.3",
          "number": "134",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-05T00:00:00.000Z",
          "legacy_version": "14.4",
          "number": "135",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-06T00:00:00.000Z",
          "legacy_version": "14.5",
          "number": "136",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-08T00:00:00.000Z",
          "legacy_version": "14.6",
          "number": "137",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-09T00:00:00.000Z",
          "legacy_version": "14.7",
          "number": "138",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-10T00:00:00.000Z",
          "legacy_version": "14.8",
          "number": "139",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-11T00:00:00.000Z",
          "legacy_version": "14.9",
          "number": "140",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-12T00:00:00.000Z",
          "legacy_version": "15",
          "number": "141",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-14T00:00:00.000Z",
          "legacy_version": "15.1",
          "number": "142",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-15T00:00:00.000Z",
          "legacy_version": "15.2",
          "number": "143",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-16T00:00:00.000Z",
          "legacy_version": "15.3",
          "number": "144",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-17T00:00:00.000Z",
          "legacy_version": "15.4",
          "number": "145",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-18T00:00:00.000Z",
          "legacy_version": "15.5",
          "number": "146",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-19T00:00:00.000Z",
          "legacy_version": "15.6",
          "number": "147",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-20T00:00:00.000Z",
          "legacy_version": "15.7",
          "number": "148",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-21T00:00:00.000Z",
          "legacy_version": "15.8",
          "number": "149",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-22T00:00:00.000Z",
          "legacy_version": "15.9",
          "number": "150",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-23T00:00:00.000Z",
          "legacy_version": "16",
          "number": "151",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-24T00:00:00.000Z",
          "legacy_version": "16.1",
          "number": "152",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-25T00:00:00.000Z",
          "legacy_version": "16.2",
          "number": "153",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-26T00:00:00.000Z",
          "legacy_version": "16.3",
          "number": "154",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-27T00:00:00.000Z",
          "legacy_version": "16.4",
          "number": "155",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-28T00:00:00.000Z",
          "legacy_version": "16.5",
          "number": "156",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-29T00:00:00.000Z",
          "legacy_version": "16.6",
          "number": "157",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-30T00:00:00.000Z",
          "legacy_version": "16.7",
          "number": "158",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-03-31T00:00:00.000Z",
          "legacy_version": "16.8",
          "number": "159",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-01T00:00:00.000Z",
          "legacy_version": "16.9",
          "number": "160",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-03T00:00:00.000Z",
          "legacy_version": "17",
          "number": "161",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-04T00:00:00.000Z",
          "legacy_version": "17.1",
          "number": "162",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-05T00:00:00.000Z",
          "legacy_version": "17.2",
          "number": "163",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-06T00:00:00.000Z",
          "legacy_version": "17.3",
          "number": "164",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-07T00:00:00.000Z",
          "legacy_version": "17.4",
          "number": "165",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-08T00:00:00.000Z",
          "legacy_version": "17.5",
          "number": "166",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-09T00:00:00.000Z",
          "legacy_version": "17.6",
          "number": "167",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-11T00:00:00.000Z",
          "legacy_version": "17.7",
          "number": "168",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-12T00:00:00.000Z",
          "legacy_version": "17.8",
          "number": "169",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-13T00:00:00.000Z",
          "legacy_version": "17.9",
          "number": "170",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-14T00:00:00.000Z",
          "legacy_version": "18",
          "number": "171",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-15T00:00:00.000Z",
          "legacy_version": "18.1",
          "number": "172",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-16T00:00:00.000Z",
          "legacy_version": "18.2",
          "number": "173",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-17T00:00:00.000Z",
          "legacy_version": "18.3",
          "number": "174",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-18T00:00:00.000Z",
          "legacy_version": "18.4",
          "number": "175",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-19T00:00:00.000Z",
          "legacy_version": "18.5",
          "number": "176",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-20T00:00:00.000Z",
          "legacy_version": "18.6",
          "number": "177",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-21T00:00:00.000Z",
          "legacy_version": "18.7",
          "number": "178",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-22T00:00:00.000Z",
          "legacy_version": "18.8",
          "number": "179",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-23T00:00:00.000Z",
          "legacy_version": "18.9",
          "number": "180",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-24T00:00:00.000Z",
          "legacy_version": "19",
          "number": "181",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-25T00:00:00.000Z",
          "legacy_version": "19.1",
          "number": "182",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-26T00:00:00.000Z",
          "legacy_version": "19.2",
          "number": "183",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-28T00:00:00.000Z",
          "legacy_version": "19.3",
          "number": "184",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-29T00:00:00.000Z",
          "legacy_version": "19.4",
          "number": "185",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-04-30T00:00:00.000Z",
          "legacy_version": "19.5",
          "number": "186",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-01T00:00:00.000Z",
          "legacy_version": "19.6",
          "number": "187",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-02T00:00:00.000Z",
          "legacy_version": "19.7",
          "number": "188",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-03T00:00:00.000Z",
          "legacy_version": "19.8",
          "number": "189",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-04T00:00:00.000Z",
          "legacy_version": "19.9",
          "number": "190",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-05T00:00:00.000Z",
          "legacy_version": "2",
          "number": "191",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-06T00:00:00.000Z",
          "legacy_version": "20.1",
          "number": "192",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-07T00:00:00.000Z",
          "legacy_version": "20.2",
          "number": "193",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-08T00:00:00.000Z",
          "legacy_version": "20.3",
          "number": "194",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-09T00:00:00.000Z",
          "legacy_version": "20.4",
          "number": "195",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-10T00:00:00.000Z",
          "legacy_version": "20.5",
          "number": "196",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-11T00:00:00.000Z",
          "legacy_version": "20.6",
          "number": "197",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-12T00:00:00.000Z",
          "legacy_version": "20.7",
          "number": "198",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-13T00:00:00.000Z",
          "legacy_version": "20.8",
          "number": "199",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-14T00:00:00.000Z",
          "legacy_version": "20.9",
          "number": "200",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-15T00:00:00.000Z",
          "legacy_version": "21",
          "number": "201",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-16T00:00:00.000Z",
          "legacy_version": "21.1",
          "number": "202",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-17T00:00:00.000Z",
          "legacy_version": "21.2",
          "number": "203",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-18T00:00:00.000Z",
          "legacy_version": "21.3",
          "number": "204",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-19T00:00:00.000Z",
          "legacy_version": "21.4",
          "number": "205",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-20T00:00:00.000Z",
          "legacy_version": "21.5",
          "number": "206",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-21T00:00:00.000Z",
          "legacy_version": "21.6",
          "number": "207",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-22T00:00:00.000Z",
          "legacy_version": "21.7",
          "number": "208",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-23T00:00:00.000Z",
          "legacy_version": "21.8",
          "number": "209",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-24T00:00:00.000Z",
          "legacy_version": "21.9",
          "number": "210",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-25T00:00:00.000Z",
          "legacy_version": "22",
          "number": "211",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-26T00:00:00.000Z",
          "legacy_version": "22.1",
          "number": "212",
          "summary": "Added samba to Azure Linux 3.0"
        },
        {
          "date": "2025-05-27T00:00:00.000Z",
          "legacy_version": "22.2",
          "number": "213",
          "summary": "Added samba to Azure Linux 3.0"
        }
      ],
      "status": "final",
      "version": "213"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cazl3 libldb 2.7.2-1",
                "product": {
                  "name": "\u003cazl3 libldb 2.7.2-1",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 libldb 2.7.2-1",
                "product": {
                  "name": "azl3 libldb 2.7.2-1",
                  "product_id": "18826"
                }
              }
            ],
            "category": "product_name",
            "name": "libldb"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cazl3 samba 4.18.3-1",
                "product": {
                  "name": "\u003cazl3 samba 4.18.3-1",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 samba 4.18.3-1",
                "product": {
                  "name": "azl3 samba 4.18.3-1",
                  "product_id": "16864"
                }
              }
            ],
            "category": "product_name",
            "name": "samba"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 libldb 2.7.2-1 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 libldb 2.7.2-1 as a component of Azure Linux 3.0",
          "product_id": "18826-17084"
        },
        "product_reference": "18826",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 samba 4.18.3-1 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 samba 4.18.3-1 as a component of Azure Linux 3.0",
          "product_id": "16864-17084"
        },
        "product_reference": "16864",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-20277",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18826-17084",
          "16864-17084"
        ],
        "known_affected": [
          "17084-1",
          "17084-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2021-20277 A flaw was found in Samba\u0027s libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-20277.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-10-15T00:00:00.000Z",
          "details": "2.7.2-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2024-10-15T00:00:00.000Z",
          "details": "4.18.3-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "17084-1",
            "17084-2"
          ]
        }
      ],
      "title": "A flaw was found in Samba\u0027s libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability."
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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