USN-3673-1

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    USN-3673-1

    Published: 7 Jun 2018Last Modified: 22 Apr 2026

    Summary: unbound vulnerability

    Details: Ralph Dolmans and Karst Koymans discovered that Unbound did not properly handle certain NSEC records. An attacker could use this to to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick Unbound into accepting a NODATA proof.

    References: https://ubuntu.com/security/notices/USN-3673-1, https://ubuntu.com/security/CVE-2017-15105

    Affected packages

    Package

    Name: unbound

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.4.22-1ubuntu4.14.04.3

    Affected versions

    1.4.20-1
    1.4.21-1
    1.4.21-1ubuntu1
    1.4.21-1ubuntu2
    1.4.22-1ubuntu1
    1.4.22-1ubuntu2
    1.4.22-1ubuntu3
    1.4.22-1ubuntu4
    1.4.22-1ubuntu4.14.04.1
    1.4.22-1ubuntu4.14.04.2

    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