gsd-2018-16851
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
Aliases
Aliases
CVE-2018-16851


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-16851",
    "description": "Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba\u0027s AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.",
    "id": "GSD-2018-16851",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-16851.html",
      "https://www.debian.org/security/2018/dsa-4345",
      "https://ubuntu.com/security/CVE-2018-16851",
      "https://advisories.mageia.org/CVE-2018-16851.html",
      "https://security.archlinux.org/CVE-2018-16851"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-16851"
      ],
      "details": "Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba\u0027s AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.",
      "id": "GSD-2018-16851",
      "modified": "2023-12-13T01:22:26.279419Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2018-16851",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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                    "version": {
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                        {
                          "version_value": "4.7.12"
                        },
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                        },
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                          "version_value": "4.9.3"
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            }
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          }
        ]
      },
      "impact": {
        "cvss": [
          [
            {
              "vectorString": "6.5/CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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      },
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          },
          {
            "name": "USN-3827-2",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3827-2/"
          },
          {
            "name": "USN-3827-1",
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          },
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            "refsource": "MLIST",
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          },
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          },
          {
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            "url": "https://www.debian.org/security/2018/dsa-4345"
          },
          {
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          },
          {
            "name": "GLSA-202003-52",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202003-52"
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        ]
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    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
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                "cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "4.8.7",
                "versionStartIncluding": "4.8.0",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
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            "operator": "OR"
          },
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            "cpe_match": [
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              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
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              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
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            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
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      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2018-16851"
        },
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        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                {
                  "lang": "en",
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                }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.samba.org/samba/security/CVE-2018-16851.html",
              "refsource": "CONFIRM",
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                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://www.samba.org/samba/security/CVE-2018-16851.html"
            },
            {
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            },
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            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-08-29T20:03Z",
      "publishedDate": "2018-11-28T14:29Z"
    }
  }
}


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