WID-SEC-W-2023-2980
Vulnerability from csaf_certbund
Published
2021-04-28 22:00
Modified
2023-11-21 23:00
Summary
Samba: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
Samba ist eine Open Source Software Suite, die Druck- und Dateidienste für SMB/CIFS Clients implementiert.
Angriff
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Samba ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder um einen Denial of Service Zustand herbeizuführen.
Betroffene Betriebssysteme
- UNIX - Linux - Windows


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Samba ist eine Open Source Software Suite, die Druck- und Dateidienste f\u00fcr SMB/CIFS Clients implementiert.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Samba ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder um einen Denial of Service Zustand herbeizuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-2980 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-2980.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-2980 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2980"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2023-7139 vom 2023-11-21",
        "url": "https://linux.oracle.com/errata/ELSA-2023-7139.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-2313 vom 2021-06-09",
        "url": "http://linux.oracle.com/errata/ELSA-2021-2313.html"
      },
      {
        "category": "external",
        "summary": "Samba Security Advisory  vom 2021-04-28",
        "url": "https://www.samba.org/samba/security/CVE-2021-20254.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:2313 vom 2021-06-09",
        "url": "https://access.redhat.com/errata/RHSA-2021:2313"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1440-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008707.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4930-1 vom 2021-04-29",
        "url": "https://ubuntu.com/security/notices/USN-4930-1"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1442-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008708.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1445-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008710.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1439-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008706.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1438-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008705.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:14709-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008704.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1444-1 vom 2021-04-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-April/008709.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2668 vom 2021-05-29",
        "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4931-1 vom 2021-05-03",
        "url": "https://ubuntu.com/security/notices/USN-4931-1"
      },
      {
        "category": "external",
        "summary": "Synology Security Advisory SYNOLOGY-SA-21:17 vom 2021-05-03",
        "url": "https://www.synology.com/en-global/support/security/Synology_SA_21_17"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1498-1 vom 2021-05-04",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-May/008730.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1492-1 vom 2021-05-04",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-May/008729.html"
      },
      {
        "category": "external",
        "summary": "CentOS Security Advisory CESA-2021:2313 vom 2021-06-14",
        "url": "http://centos-announce.2309468.n4.nabble.com/CentOS-announce-CESA-2021-2313-Moderate-CentOS-7-samba-Security-Update-tp4646188.html"
      },
      {
        "category": "external",
        "summary": "QNAP Security Advisory QSA-21-27 vom 2021-06-16",
        "url": "https://www.qnap.com/go/security-advisory/qsa-21-27"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory",
        "url": "https://downloads.avaya.com/css/P8/documents/101076504"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2021-1680 vom 2021-07-02",
        "url": "https://alas.aws.amazon.com/AL2/ALAS-2021-1680.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:3988 vom 2021-10-26",
        "url": "https://access.redhat.com/errata/RHSA-2021:3988"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:3187-1 vom 2021-09-22",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-September/009483.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:3723 vom 2021-10-05",
        "url": "https://access.redhat.com/errata/RHSA-2021:3723"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:3724 vom 2021-10-05",
        "url": "https://access.redhat.com/errata/RHSA-2021:3724"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:4058 vom 2021-11-02",
        "url": "https://access.redhat.com/errata/RHSA-2021:4058"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2021-4058 vom 2021-11-03",
        "url": "http://linux.oracle.com/errata/ELSA-2021-4058.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2021:4866 vom 2021-11-30",
        "url": "https://access.redhat.com/errata/RHSA-2021:4866"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2022:0361-1 vom 2022-02-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-February/010209.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2022-1564 vom 2022-02-19",
        "url": "https://alas.aws.amazon.com/ALAS-2022-1564.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Samba: Schwachstelle erm\u00f6glicht Umgehen von Sicherheitsvorkehrungen",
    "tracking": {
      "current_release_date": "2023-11-21T23:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T17:52:08.332+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-2980",
      "initial_release_date": "2021-04-28T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-04-28T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-04-29T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE, Ubuntu und Fedora aufgenommen"
        },
        {
          "date": "2021-05-03T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu und Synology aufgenommen"
        },
        {
          "date": "2021-05-04T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-05-30T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2021-06-08T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-06-09T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-06-14T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von CentOS aufgenommen"
        },
        {
          "date": "2021-06-15T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von QNAP aufgenommen"
        },
        {
          "date": "2021-06-27T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2021-07-01T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2021-09-22T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-10-04T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-10-25T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-11-01T23:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2021-11-02T23:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2021-11-30T23:00:00.000+00:00",
          "number": "17",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-02-10T23:00:00.000+00:00",
          "number": "18",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2022-02-20T23:00:00.000+00:00",
          "number": "19",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-11-21T23:00:00.000+00:00",
          "number": "20",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        }
      ],
      "status": "final",
      "version": "20"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Avaya Aura Application Enablement Services",
            "product": {
              "name": "Avaya Aura Application Enablement Services",
              "product_id": "T015516",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_application_enablement_services:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Communication Manager",
            "product": {
              "name": "Avaya Aura Communication Manager",
              "product_id": "T015126",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:communication_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Session Manager",
            "product": {
              "name": "Avaya Aura Session Manager",
              "product_id": "T015127",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:session_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura System Manager",
            "product": {
              "name": "Avaya Aura System Manager",
              "product_id": "T015518",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_system_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Web License Manager",
            "product": {
              "name": "Avaya Web License Manager",
              "product_id": "T016243",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:web_license_manager:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Avaya"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source CentOS",
            "product": {
              "name": "Open Source CentOS",
              "product_id": "1727",
              "product_identification_helper": {
                "cpe": "cpe:/o:centos:centos:-"
              }
            }
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Open Source Samba \u003c 4.14.4",
                "product": {
                  "name": "Open Source Samba \u003c 4.14.4",
                  "product_id": "T019158",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:samba:samba:4.14.4"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Open Source Samba \u003c 4.12.15",
                "product": {
                  "name": "Open Source Samba \u003c 4.12.15",
                  "product_id": "T019159",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:samba:samba:4.12.15"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Open Source Samba \u003c 4.13.8",
                "product": {
                  "name": "Open Source Samba \u003c 4.13.8",
                  "product_id": "T019160",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:samba:samba:4.13.8"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Samba"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T004914",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "QNAP NAS",
            "product": {
              "name": "QNAP NAS",
              "product_id": "T017100",
              "product_identification_helper": {
                "cpe": "cpe:/h:qnap:nas:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "QNAP"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Synology DiskStation Manager",
            "product": {
              "name": "Synology DiskStation Manager",
              "product_id": "450918",
              "product_identification_helper": {
                "cpe": "cpe:/a:synology:diskstation_manager:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Synology"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-20254",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Samba. Ein Kodierungsfehler bei der Konvertierung von Windows Gruppenkennungen (SIDs) in Unix Gruppenkennungen (gids) erm\u00f6glicht unerwartete Gruppeneintr\u00e4ge in einem Prozess-Token. Ein authentisierter Angreifer kann diese Schwachstelle ausnutzen, um Sicherheitsvorkehrungen zu umgehen und einen nicht autorisierten Zugriff auf Dateien zu erlangen oder um den Dienst in einen Denial of Service Zustand zu versetzen.."
        }
      ],
      "product_status": {
        "known_affected": [
          "T015518",
          "67646",
          "T015516",
          "T015127",
          "T015126",
          "T004914",
          "450918",
          "T016243",
          "T017100",
          "2951",
          "T002207",
          "T000126",
          "398363",
          "1727"
        ]
      },
      "release_date": "2021-04-28T22:00:00Z",
      "title": "CVE-2021-20254"
    }
  ]
}


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