7.8
CWE
399
Advisory Published
Updated

CVE-2015-5470

First published: Mon Nov 02 2015(Updated: )

The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PowerDNS<=3.3.2
PowerDNS=3.4.0
PowerDNS=3.4.1
PowerDNS=3.4.2
PowerDNS=3.4.3
PowerDNS=3.4.4
PowerDNS<=3.6.3
PowerDNS=3.7.1
PowerDNS=3.7.2

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Frequently Asked Questions

  • What is the severity of CVE-2015-5470?

    CVE-2015-5470 has a severity rating that indicates it can lead to denial of service attacks, affecting CPU consumption and stability.

  • How do I fix CVE-2015-5470?

    To mitigate CVE-2015-5470, upgrade PowerDNS Recursor to version 3.6.4 or higher and the Authoritative Server to version 3.4.5 or higher.

  • Which versions of PowerDNS are affected by CVE-2015-5470?

    CVE-2015-5470 affects PowerDNS Recursor versions before 3.6.4 and 3.7.x before 3.7.3, as well as Authoritative versions before 3.3.3 and 3.4.x before 3.4.5.

  • What type of attack does CVE-2015-5470 enable?

    CVE-2015-5470 enables remote attackers to launch denial of service attacks by causing high CPU consumption or crashes through specific DNS name requests.

  • Is there a workaround for CVE-2015-5470 if I can't upgrade?

    There are no documented workarounds for CVE-2015-5470, so upgrading to a patched version is the recommended approach.

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