GSD-2018-16851

Vulnerability from gsd - Updated: 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": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2018-16851",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "samba",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "4.7.12"
                        },
                        {
                          "version_value": "4.8.7"
                        },
                        {
                          "version_value": "4.9.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "[UNKNOWN]"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "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."
          }
        ]
      },
      "impact": {
        "cvss": [
          [
            {
              "vectorString": "6.5/CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.0"
            }
          ]
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-476"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "106027",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/106027"
          },
          {
            "name": "USN-3827-2",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3827-2/"
          },
          {
            "name": "USN-3827-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3827-1/"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20181127-0001/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20181127-0001/"
          },
          {
            "name": "[debian-lts-announce] 20181215 [SECURITY] [DLA 1607-1] samba security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851",
            "refsource": "CONFIRM",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851"
          },
          {
            "name": "DSA-4345",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2018/dsa-4345"
          },
          {
            "name": "https://www.samba.org/samba/security/CVE-2018-16851.html",
            "refsource": "CONFIRM",
            "url": "https://www.samba.org/samba/security/CVE-2018-16851.html"
          },
          {
            "name": "GLSA-202003-52",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202003-52"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.8.7",
                "versionStartIncluding": "4.8.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.7.12",
                "versionStartIncluding": "4.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.9.3",
                "versionStartIncluding": "4.9.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2018-16851"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-476"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.samba.org/samba/security/CVE-2018-16851.html",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://www.samba.org/samba/security/CVE-2018-16851.html"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851"
            },
            {
              "name": "DSA-4345",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2018/dsa-4345"
            },
            {
              "name": "USN-3827-2",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/3827-2/"
            },
            {
              "name": "USN-3827-1",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/3827-1/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20181127-0001/",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.netapp.com/advisory/ntap-20181127-0001/"
            },
            {
              "name": "106027",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/106027"
            },
            {
              "name": "[debian-lts-announce] 20181215 [SECURITY] [DLA 1607-1] samba security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html"
            },
            {
              "name": "GLSA-202003-52",
              "refsource": "GENTOO",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.gentoo.org/glsa/202003-52"
            }
          ]
        }
      },
      "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"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.