CVE-2016-7068

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    CVE-2016-7068

    Published: 11 Sept 2018Last Modified: 7 Aug 2026

    Summary:

    Details: An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.

    References: https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/, https://www.debian.org/security/2017/dsa-3763, https://www.debian.org/security/2017/dsa-3764, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -06ede1f2c905091585c1adfc4eb9208e256fcb3b

    Affected versions

    rec-4.0.3
    rec-4.0.2
    rec-4.0.1
    rec-4.0.0

    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