CVE-2017-6519
CRITICALAvahi < 0.6.32 - Denial of Service via IPv6 Unicast Query Response
Title source: llmDescription
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.
References (7)
Core 7
Core References
Third Party Advisory x_refsource_misc
https://github.com/lathiat/avahi/issues/203#issuecomment-449536790
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3876-1/
Exploit, Third Party Advisory x_refsource_misc
https://github.com/lathiat/avahi/issues/203
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1426712
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3876-2/
Third Party Advisory x_refsource_misc
https://www.secfu.net/advisories
Mailing List mailing-list
x_refsource_mlist
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Scores
CVSS v3
9.1
EPSS
0.0308
EPSS Percentile
86.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-346
Status
published
Products (7)
avahi/avahi
0.7
avahi/avahi
< 0.6.32
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
18.10
Published
May 01, 2017
Tracked Since
Feb 18, 2026