wid-sec-w-2025-0235
Vulnerability from csaf_certbund
Published
2020-08-12 22:00
Modified
2025-02-02 23:00
Summary
Dovecot: Mehrere Schwachstellen ermöglichen Denial of Service

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
Dovecot ist ein Open Source IMAP und POP3 E-Mail Server.
Angriff
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Dovecot, ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme
- Linux - UNIX


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": "Dovecot ist ein Open Source IMAP und POP3 E-Mail Server.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Dovecot, ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "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-2025-0235 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2025-0235.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2025-0235 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-0235"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000440.html"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000441.html"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000442.html"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000443.html"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000444.html"
      },
      {
        "category": "external",
        "summary": "Dovecot-News vom 2020-08-12",
        "url": "https://dovecot.org/pipermail/dovecot-news/2020-August/000439.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-2328 vom 2020-08-16",
        "url": "https://lists.debian.org/debian-lts-announce/2020/debian-lts-announce-202008/msg00024.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4456-2 vom 2020-08-17",
        "url": "https://usn.ubuntu.com/4456-2/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2020:2267-1 vom 2020-08-18",
        "url": "http://lists.suse.com/pipermail/sle-security-updates/2020-August/007273.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2020:2266-1 vom 2020-08-18",
        "url": "http://lists.suse.com/pipermail/sle-security-updates/2020-August/007277.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2020:2274-1 vom 2020-08-19",
        "url": "http://lists.suse.com/pipermail/sle-security-updates/2020-August/007281.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:3617 vom 2020-09-03",
        "url": "https://access.redhat.com/errata/RHSA-2020:3617"
      },
      {
        "category": "external",
        "summary": "GENTOO Security Advisory GLSA-202009-02 vom 2020-09-06",
        "url": "https://security.gentoo.org/glsa/202009-02"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:3713 vom 2020-09-10",
        "url": "https://access.redhat.com/errata/RHSA-2020:3713"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:3736 vom 2020-09-14",
        "url": "https://access.redhat.com/errata/RHSA-2020:3736"
      },
      {
        "category": "external",
        "summary": "CentOS Security Advisory CESA-2020:3617 vom 2020-09-14",
        "url": "http://centos-announce.2309468.n4.nabble.com/CentOS-announce-CESA-2020-3617-Important-CentOS-7-dovecot-Security-Update-tp4646011.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:3735 vom 2020-09-14",
        "url": "https://access.redhat.com/errata/RHSA-2020:3735"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0029-1 vom 2021-01-05",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-January/008153.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0027-1 vom 2021-01-05",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-January/008154.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:0028-1 vom 2021-01-05",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-January/008152.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:2892-1 vom 2021-09-01",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009374.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:2891-1 vom 2021-09-01",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009375.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:2890-1 vom 2021-09-01",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009373.html"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2025:14715-1 vom 2025-01-31",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/KZSDCZ5LA6IHY7KXVSL6ULAJVP6OFT2M/"
      }
    ],
    "source_lang": "en-US",
    "title": "Dovecot: Mehrere Schwachstellen erm\u00f6glichen Denial of Service",
    "tracking": {
      "current_release_date": "2025-02-02T23:00:00.000+00:00",
      "generator": {
        "date": "2025-02-03T09:07:26.505+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.10"
        }
      },
      "id": "WID-SEC-W-2025-0235",
      "initial_release_date": "2020-08-12T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2020-08-12T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2020-08-16T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2020-08-17T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2020-08-18T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2020-08-19T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2020-08-27T22:00:00.000+00:00",
          "number": "6",
          "summary": "Referenz(en) aufgenommen: FEDORA-2020-B8EBC4201E, FEDORA-2020-CD8B8F887B, FEDORA-2020-D737C57172"
        },
        {
          "date": "2020-09-02T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-09-06T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von GENTOO aufgenommen"
        },
        {
          "date": "2020-09-10T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-09-14T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat und CentOS aufgenommen"
        },
        {
          "date": "2021-01-05T23:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-08-31T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2025-02-02T23:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von openSUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "13"
    }
  },
  "product_tree": {
    "branches": [
      {
        "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": "Gentoo Linux",
            "product": {
              "name": "Gentoo Linux",
              "product_id": "T012167",
              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
      },
      {
        "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_version_range",
                "name": "\u003c2.3.11.3",
                "product": {
                  "name": "Open Source Dovecot \u003c2.3.11.3",
                  "product_id": "T017110"
                }
              },
              {
                "category": "product_version",
                "name": "2.3.11.3",
                "product": {
                  "name": "Open Source Dovecot 2.3.11.3",
                  "product_id": "T017110-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:dovecot:dovecot:2.3.11.3"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Dovecot"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "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": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T027843",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "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-2020-12100",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Dovecot. Bei der Analyse von E-Mails mit tief verschachtelten MIME-Teilen kommt es zur Ressourcenersch\u00f6pfung. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "T012167",
          "1727",
          "T017110"
        ]
      },
      "release_date": "2020-08-12T22:00:00.000+00:00",
      "title": "CVE-2020-12100"
    },
    {
      "cve": "CVE-2020-12673",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Dovecot. Die NTLM-Implementierung von Dovecot pr\u00fcft die Gr\u00f6\u00dfe des Nachrichtenpuffers nicht korrekt, was zum Lesen fr\u00fcherer Zuweisungen f\u00fchrt. In der Folge wird unkontrolliert Speicher belegt. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "T012167",
          "1727",
          "T017110"
        ]
      },
      "release_date": "2020-08-12T22:00:00.000+00:00",
      "title": "CVE-2020-12673"
    },
    {
      "cve": "CVE-2020-12674",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Dovecot. Die RPA-Mechanismus-Implementierung von Dovecot akzeptiert Null-L\u00e4ngen-Nachrichten, was sp\u00e4ter zum Assert-Crash f\u00fchrt. Ein entfernter anonymer Angreifer kann diese Schwachstelle ausnutzen, um den Authprozess wiederholt zum Absturz zu bringen und so die Anmeldung zu verhindern."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "T012167",
          "1727",
          "T017110"
        ]
      },
      "release_date": "2020-08-12T22:00:00.000+00:00",
      "title": "CVE-2020-12674"
    }
  ]
}


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