What is CVE-2016-7073?

CVE-2016-7073 is a vulnerability found in PowerDNS versions before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, that allows an attacker in a man-in-the-middle position to alter the content of an AXFR due to insufficient validation of TSIG signatures.

What software versions are affected by CVE-2016-7073?

PowerDNS Authoritative versions up to 3.4.11 and 4.0.2, PowerDNS Recursor versions up to 3.7.4 and 4.0.4, and Debian Linux version 8.0 are affected by CVE-2016-7073.

How severe is CVE-2016-7073?

CVE-2016-7073 has a severity score of 5.9, which is considered medium.

What is the remedy for CVE-2016-7073?

Updating to PowerDNS versions 4.1.6-3+deb10u1, 4.4.1-1, 4.7.3-2, 4.8.3-1, or 4.8.3-2 for PowerDNS Authoritative, and 4.1.11-1+deb10u1, 4.4.2-3, 4.8.4-1, 4.9.1-3, or 4.9.1-4 for PowerDNS Recursor is recommended to fix CVE-2016-7073.

Where can I find more information about CVE-2016-7073?

You can find more information about CVE-2016-7073 in the following references: [1] [2] [3]

Vulnerability/
CVE-2016-7073

medium

5.9

CWE

11/9/2018

9/10/2019

CVE-2016-7073: Input Validation

First published: Tue Sep 11 2018(Updated: )

An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, allowing an attacker in position of man-in-the-middle to alter the content of an AXFR because of insufficient validation of TSIG signatures. A missing check of the TSIG time and fudge values was found in AXFRRetriever, leading to a possible replay attack.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
PowerDNS Authoritative	<3.4.11
PowerDNS Authoritative	>=4.0.0<4.0.2
PowerDNS Recursor	<3.7.4
PowerDNS Recursor	>=4.0.0<4.0.4
Debian Debian Linux	=8.0
debian/pdns		4.1.6-3+deb10u1 4.4.1-1 4.7.3-2 4.8.3-1 4.8.3-2
debian/pdns-recursor		4.1.11-1+deb10u1 4.4.2-3 4.8.4-1 4.9.1-3 4.9.1-4

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Frequently Asked Questions

What is CVE-2016-7073?
CVE-2016-7073 is a vulnerability found in PowerDNS versions before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, that allows an attacker in a man-in-the-middle position to alter the content of an AXFR due to insufficient validation of TSIG signatures.
What software versions are affected by CVE-2016-7073?
PowerDNS Authoritative versions up to 3.4.11 and 4.0.2, PowerDNS Recursor versions up to 3.7.4 and 4.0.4, and Debian Linux version 8.0 are affected by CVE-2016-7073.
How severe is CVE-2016-7073?
CVE-2016-7073 has a severity score of 5.9, which is considered medium.
What is the remedy for CVE-2016-7073?
Updating to PowerDNS versions 4.1.6-3+deb10u1, 4.4.1-1, 4.7.3-2, 4.8.3-1, or 4.8.3-2 for PowerDNS Authoritative, and 4.1.11-1+deb10u1, 4.4.2-3, 4.8.4-1, 4.9.1-3, or 4.9.1-4 for PowerDNS Recursor is recommended to fix CVE-2016-7073.
Where can I find more information about CVE-2016-7073?
You can find more information about CVE-2016-7073 in the following references: [1] [2] [3]

collector/nvd-index
collector/security-tracker-debian
vendor/powerdns
canonical/powerdns authoritative
version/powerdns authoritative/4.0.0
canonical/powerdns recursor
version/powerdns recursor/4.0.0
vendor/debian
canonical/debian debian linux
version/debian debian linux/8.0
package-manager/debian

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