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Linux Distros Unpatched Vulnerability : CVE-2017-6519

critical Nessus Plugin ID 221600

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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. (CVE-2017-6519)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2017-6519

Plugin Details

Severity: Critical

ID: 221600

File Name: unpatched_CVE_2017_6519.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/4/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2017-6519

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:avahi-compat-howl-devel, p-cpe:/a:centos:centos:avahi-compat-libdns_sd, p-cpe:/a:centos:centos:avahi-compat-libdns_sd-devel, p-cpe:/a:centos:centos:avahi-glib, p-cpe:/a:centos:centos:avahi-autoipd, p-cpe:/a:centos:centos:avahi-gobject-devel, p-cpe:/a:centos:centos:avahi-qt4, p-cpe:/a:centos:centos:avahi-ui, p-cpe:/a:centos:centos:avahi-ui-gtk3, p-cpe:/a:redhat:enterprise_linux:avahi-autoipd, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl-devel, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd-devel, p-cpe:/a:redhat:enterprise_linux:avahi-glib, p-cpe:/a:redhat:enterprise_linux:avahi-gobject-devel, p-cpe:/a:redhat:enterprise_linux:avahi-qt4, p-cpe:/a:redhat:enterprise_linux:avahi-ui, p-cpe:/a:redhat:enterprise_linux:avahi-ui-gtk3, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:avahi, p-cpe:/a:centos:centos:avahi-compat-howl, p-cpe:/a:centos:centos:avahi-devel, p-cpe:/a:centos:centos:avahi-glib-devel, p-cpe:/a:centos:centos:avahi-qt3, p-cpe:/a:centos:centos:avahi-qt3-devel, p-cpe:/a:centos:centos:avahi-tools, p-cpe:/a:centos:centos:avahi-dnsconfd, p-cpe:/a:centos:centos:avahi-gobject, p-cpe:/a:centos:centos:avahi-libs, p-cpe:/a:centos:centos:avahi-qt4-devel, p-cpe:/a:centos:centos:avahi-ui-devel, p-cpe:/a:centos:centos:avahi-ui-tools, p-cpe:/a:redhat:enterprise_linux:avahi, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl, p-cpe:/a:redhat:enterprise_linux:avahi-devel, p-cpe:/a:redhat:enterprise_linux:avahi-dnsconfd, p-cpe:/a:redhat:enterprise_linux:avahi-glib-devel, p-cpe:/a:redhat:enterprise_linux:avahi-gobject, p-cpe:/a:redhat:enterprise_linux:avahi-libs, p-cpe:/a:redhat:enterprise_linux:avahi-qt3, p-cpe:/a:redhat:enterprise_linux:avahi-qt3-devel, p-cpe:/a:redhat:enterprise_linux:avahi-qt4-devel, p-cpe:/a:redhat:enterprise_linux:avahi-tools, p-cpe:/a:redhat:enterprise_linux:avahi-ui-devel, p-cpe:/a:redhat:enterprise_linux:avahi-ui-tools, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:python3-avahi, p-cpe:/a:centos:centos:python3-avahi

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 3/3/2015

Reference Information

CVE: CVE-2017-6519