CVE-2017-6519

9.1 CRITICAL
Published: May 01, 2017 Modified: December 03, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1426712
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
https://github.com/lathiat/avahi/issues/203
Source: cve@mitre.org
Exploit Third Party Advisory
https://github.com/lathiat/avahi/issues/203#issuecomment-449536790
Source: cve@mitre.org
Third Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Source: cve@mitre.org
https://usn.ubuntu.com/3876-1/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3876-2/
Source: cve@mitre.org
Third Party Advisory
https://www.secfu.net/advisories
Source: cve@mitre.org
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1426712
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
https://github.com/lathiat/avahi/issues/203
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://github.com/lathiat/avahi/issues/203#issuecomment-449536790
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Source: af854a3a-2127-422b-91ae-364da2661108
https://usn.ubuntu.com/3876-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3876-2/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.secfu.net/advisories
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

14 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.1 / 10.0
EPSS (Exploit Probability)
1.5%
81th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-346 CWE-346

Affected Vendors

avahi canonical

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