CVE-2016-7073

Name: CVE-2016-7073
Creator: NVD / NIST
Published: 2018-09-11T13:29:01.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.23%

Last modified Jun 17, 2026

CVE-2016-7073 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

1.23%

65.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
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

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7073Issue Tracking, Third Party Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/Vendor Advisory
https://www.debian.org/security/2017/dsa-3764Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7073Issue Tracking, Third Party Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/Vendor Advisory
https://www.debian.org/security/2017/dsa-3764Third Party Advisory

Timeline

Published: Sep 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-7073?

How severe is CVE-2016-7073?

Severity scoring for CVE-2016-7073 is pending analysis. The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2016-7073?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-7073?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST