CVE-2017-6519 Information

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 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1426712 https://github.com/lathiat/avahi/issues/203 https://github.com/lathiat/avahi/issues/203issuecomment-449536790 https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@3Cissues.bookkeeper.apache.org3E https://usn.ubuntu.com/3876-1/ https://usn.ubuntu.com/3876-2/ https://www.secfu.net/advisories

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1