OESA-2021-1232 (CVE-2021-3468)

Vulnerability from osv_openeuler – Published: 2021-06-22 11:04 – Updated: 2026-08-06 11:04 – Source website
VLAI
Summary
avahi security update
Details

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. This enables you to plug your laptop or computer into a network and instantly be able to view other people who you can chat with, find printers to print to or find files being shared.

Security Fix(es):

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.(CVE-2021-3468)

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "avahi-debugsource-0.8-4.oe1.aarch64.rpm",
          "avahi-dnsconfd-0.8-4.oe1.aarch64.rpm",
          "avahi-tools-0.8-4.oe1.aarch64.rpm",
          "avahi-compat-libdns_sd-devel-0.8-4.oe1.aarch64.rpm",
          "avahi-glib-0.8-4.oe1.aarch64.rpm",
          "avahi-ui-devel-0.8-4.oe1.aarch64.rpm",
          "avahi-compat-howl-devel-0.8-4.oe1.aarch64.rpm",
          "avahi-compat-libdns_sd-0.8-4.oe1.aarch64.rpm",
          "avahi-0.8-4.oe1.aarch64.rpm",
          "avahi-ui-gtk3-0.8-4.oe1.aarch64.rpm",
          "avahi-devel-0.8-4.oe1.aarch64.rpm",
          "avahi-debuginfo-0.8-4.oe1.aarch64.rpm",
          "avahi-compat-howl-0.8-4.oe1.aarch64.rpm",
          "avahi-gobject-0.8-4.oe1.aarch64.rpm",
          "avahi-libs-0.8-4.oe1.aarch64.rpm",
          "avahi-ui-0.8-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "avahi-help-0.8-4.oe1.noarch.rpm"
        ],
        "src": [
          "avahi-0.8-4.oe1.src.rpm"
        ],
        "x86_64": [
          "avahi-compat-libdns_sd-devel-0.8-4.oe1.x86_64.rpm",
          "avahi-tools-0.8-4.oe1.x86_64.rpm",
          "avahi-gobject-0.8-4.oe1.x86_64.rpm",
          "avahi-libs-0.8-4.oe1.x86_64.rpm",
          "avahi-ui-0.8-4.oe1.x86_64.rpm",
          "avahi-glib-0.8-4.oe1.x86_64.rpm",
          "avahi-0.8-4.oe1.x86_64.rpm",
          "avahi-devel-0.8-4.oe1.x86_64.rpm",
          "avahi-compat-libdns_sd-0.8-4.oe1.x86_64.rpm",
          "avahi-ui-devel-0.8-4.oe1.x86_64.rpm",
          "avahi-debuginfo-0.8-4.oe1.x86_64.rpm",
          "avahi-compat-howl-devel-0.8-4.oe1.x86_64.rpm",
          "avahi-compat-howl-0.8-4.oe1.x86_64.rpm",
          "avahi-ui-gtk3-0.8-4.oe1.x86_64.rpm",
          "avahi-dnsconfd-0.8-4.oe1.x86_64.rpm",
          "avahi-debugsource-0.8-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "avahi",
        "purl": "pkg:rpm/openEuler/avahi\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. This enables you to plug your laptop or computer into a network and instantly be able to view other people who you can chat with, find printers to print to or find files being shared.\r\n\r\nSecurity Fix(es):\r\n\r\nA 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.(CVE-2021-3468)",
  "id": "OESA-2021-1232",
  "modified": "2026-08-06T11:04:28Z",
  "published": "2021-06-22T11:04:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1232"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3468"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "avahi security update",
  "upstream": [
    "CVE-2021-3468"
  ]
}



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