WID-SEC-W-2022-0143

Vulnerability from csaf_certbund - Published: 2021-06-03 22:00 - Updated: 2024-01-30 23:00
Summary
avahi: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
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: Avahi ist die Implementierung einer Technik zur Vernetzung von Geräten in einem lokalen Netzwerk, ohne dass diese manuell konfiguriert werden müssen.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle in avahi ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - UNIX - Linux
CVE-2021-3468

Es existiert eine Schwachstelle in avahi. Der "avahi-deamon" schreibt überlange Zeilen in "/run/avahi-daemon/socket". Ein lokaler Angreifer kann dies ausnutzen, um einen Denial-of-Service-Zustand auszulösen.

Affected products
Product Identifier Version Remediation
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE Linux
SUSE
 cpe:/o:suse:suse_linux:- —
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
Red Hat Single Sign On < 7.6.6
Red Hat
 cpe:/a:redhat:single_sign_on:7.6.6 —
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source avahi
Open Source
 cpe:/a:avahi:avahi:0.1 —
References
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": "Avahi ist die Implementierung einer Technik zur Vernetzung von Ger\u00e4ten in einem lokalen Netzwerk, ohne dass diese manuell konfiguriert werden m\u00fcssen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in avahi ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux",
        "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-2022-0143 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0143.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-0143 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0143"
      },
      {
        "category": "external",
        "summary": "Github - Avahi Security Advisory vom 2021-06-03",
        "url": "https://github.com/lathiat/avahi/pull/330"
      },
      {
        "category": "external",
        "summary": "SUSE Security Advisory SUSE-SU-2021:1494-2 vom 2021-06-03",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-June/008929.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Bugzilla - Bug 1939614 vom 2021-06-03",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939614"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2021:1493-2 vom 2021-06-04",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2021-June/008937.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5008-1 vom 2021-07-07",
        "url": "https://ubuntu.com/security/notices/USN-5008-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-5008-2 vom 2021-07-07",
        "url": "https://ubuntu.com/security/notices/USN-5008-2"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-3047 vom 2022-06-07",
        "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-3466 vom 2023-06-22",
        "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2023:6707 vom 2023-11-07",
        "url": "https://access.redhat.com/errata/RHSA-2023:6707"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS-2023-2372 vom 2023-12-05",
        "url": "https://alas.aws.amazon.com/AL2/ALAS-2023-2372.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2023:7836 vom 2023-12-14",
        "url": "https://access.redhat.com/errata/RHSA-2023:7836"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2023-7836 vom 2023-12-18",
        "url": "https://linux.oracle.com/errata/ELSA-2023-7836.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2024:0097 vom 2024-01-10",
        "url": "https://access.redhat.com/errata/RHSA-2024:0097"
      },
      {
        "category": "external",
        "summary": "RedHat Security Advisory",
        "url": "https://access.redhat.com/errata/RHSA-2024:0418"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2024:0576 vom 2024-01-30",
        "url": "https://access.redhat.com/errata/RHSA-2024:0576"
      }
    ],
    "source_lang": "en-US",
    "title": "avahi: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-01-30T23:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:26:50.288+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2022-0143",
      "initial_release_date": "2021-06-03T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-06-03T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-06-06T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2021-07-07T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2022-06-07T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2023-06-21T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2023-11-07T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2023-12-04T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-12-14T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2023-12-17T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2024-01-09T23:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2024-01-24T23:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2024-01-30T23:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Red Hat aufgenommen"
        }
      ],
      "status": "final",
      "version": "12"
    }
  },
  "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": "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 avahi",
            "product": {
              "name": "Open Source avahi",
              "product_id": "395904",
              "product_identification_helper": {
                "cpe": "cpe:/a:avahi:avahi:0.1"
              }
            }
          }
        ],
        "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": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Red Hat Single Sign On \u003c 7.6.6",
            "product": {
              "name": "Red Hat Single Sign On \u003c 7.6.6",
              "product_id": "T031713",
              "product_identification_helper": {
                "cpe": "cpe:/a:redhat:single_sign_on:7.6.6"
              }
            }
          }
        ],
        "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": "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-2021-3468",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in avahi. Der \"avahi-deamon\" schreibt \u00fcberlange Zeilen in \"/run/avahi-daemon/socket\". Ein lokaler Angreifer kann dies ausnutzen, um einen Denial-of-Service-Zustand auszul\u00f6sen."
        }
      ],
      "product_status": {
        "known_affected": [
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T031713",
          "398363",
          "T004914",
          "395904"
        ]
      },
      "release_date": "2021-06-03T22:00:00.000+00:00",
      "title": "CVE-2021-3468"
    }
  ]
}



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