CVE-2017-6519

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    CVE-2017-6519

    Published: 1 May 2017Last Modified: 8 Jul 2026

    Summary:

    Details: 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: https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E, https://github.com/lathiat/avahi/issues/203#issuecomment-449536790, https://usn.ubuntu.com/3876-1/, https://usn.ubuntu.com/3876-2/, https://www.secfu.net/advisories, https://bugzilla.redhat.com/show_bug.cgi?id=1426712, https://github.com/lathiat/avahi/issues/203

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.7

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2017-6519 | CVE-DB