{"cve":"CVE-2017-6519","nvd":{"published":"2017-05-01T01:59:00.297","modified":"2026-06-17T01:22:29.790","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":9.1},"cwes":["CWE-346"],"references":["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/"],"products":["avahi:avahi","canonical:ubuntu_linux"],"source":"nvd","synced_at":"2026-10-19T20:42:28.077359912+00:00"},"epss":{"cve":"CVE-2017-6519","score":0.03238,"percentile":0.88286,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}