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.
Published: 2017-05-01
Score: 9.1 Critical
EPSS: 1.3% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-15575 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.
Ubuntu USN Ubuntu USN USN-3876-1 Avahi vulnerabilities
Ubuntu USN Ubuntu USN USN-3876-2 Avahi vulnerabilities
History

Wed, 03 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Avahi Avahi
Canonical Ubuntu Linux
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-12-03T21:57:30.030Z

Reserved: 2017-03-07T00:00:00.000Z

Link: CVE-2017-6519

cve-icon Vulnrichment

Updated: 2024-08-05T15:33:20.149Z

cve-icon NVD

Status : Modified

Published: 2017-05-01T01:59:00.297

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-6519

cve-icon Redhat

Severity : Low

Publid Date: 2015-03-31T00:00:00Z

Links: CVE-2017-6519 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses