csaf_certbund - wid-sec-w-2022-0143

wid-sec-w-2022-0143

Vulnerability from csaf_certbund

Published

2021-06-03 22:00

Modified

2024-01-30 23:00

Summary

avahi: Schwachstelle ermöglicht 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

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

JSON

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{
  "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": "2024-02-15T16:46:19.861+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "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": "2021-06-03T22:00:00Z",
      "title": "CVE-2021-3468"
    }
  ]
}

cve-2021-3468

Vulnerability from cvelistv5

Published

2021-06-02 15:09

Modified

2024-08-03 16:53

Severity ?

Summary

A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1939614	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html

Impacted products

▼	Vendor	Product
	n/a	avahi

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:53:17.602Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939614"
          },
          {
            "name": "[debian-lts-announce] 20220607 [SECURITY] [DLA 3047-1] avahi security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "avahi",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "All avahi versions 0.6 up to 0.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-06-07T20:06:14",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939614"
        },
        {
          "name": "[debian-lts-announce] 20220607 [SECURITY] [DLA 3047-1] avahi security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3468",
    "datePublished": "2021-06-02T15:09:21",
    "dateReserved": "2021-03-26T00:00:00",
    "dateUpdated": "2024-08-03T16:53:17.602Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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