{
    "id": "CVE-2017-6519",
    "published": "2017-05-01 01:59:00",
    "last_modified": "2026-06-17 01:22:29",
    "cvss_score": "9.1",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
    "cwe": "CWE-346",
    "description": "avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive  information from the responding device via port-5353 UDP packets.  NOTE: this may overlap CVE-2015-2809.",
    "epss_score": "0.03238",
    "epss_percentile": "0.87941",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:16",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "avahi",
            "product": "avahi"
        },
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=1426712",
        "https://github.com/lathiat/avahi/issues/203",
        "https://github.com/lathiat/avahi/issues/203#issuecomment-449536790",
        "https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E",
        "https://usn.ubuntu.com/3876-1/",
        "https://usn.ubuntu.com/3876-2/",
        "https://www.secfu.net/advisories",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1426712",
        "https://github.com/lathiat/avahi/issues/203",
        "https://github.com/lathiat/avahi/issues/203#issuecomment-449536790",
        "https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E",
        "https://usn.ubuntu.com/3876-1/",
        "https://usn.ubuntu.com/3876-2/",
        "https://www.secfu.net/advisories"
    ]
}