Vulnerability DatabaseCVE-2017-6519
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CVE-2017-6519
Published:May 01, 2017
Updated:May 17, 2026
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.
Related Resources (8)
https://github.com/lathiat/avahi/issues/203#issuecomment-449536790
https://usn.ubuntu.com/3876-2/
https://usn.ubuntu.com/3876-1/
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
https://github.com/lathiat/avahi/issues/203
https://www.secfu.net/advisories
https://access.redhat.com/security/cve/CVE-2017-6519
https://bugzilla.redhat.com/show_bug.cgi?id=1426712
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CVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Origin Validation Error
CWE-346
EPSS
Base Score:
1.29