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CVE-2016-7073

MEDIUM
5.3
CVSS Score
Published: September 11, 2018 at 01:00 PM UTC
Updated: June 17, 2026 at 12:52 AM UTC
4 products affected across 3 vendorsDebian LinuxAuthoritativeRecursor

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
8.0
Authoritative· Powerdns
95%
v < 3.4.114.0.0 ≤ v < 4.0.2
Affected range stops below 3.4.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.2, so it looks safe — our inference, not a vendor statement
Recursor· Powerdns
95%
v < 3.7.44.0.0 ≤ v < 4.0.4
Affected range stops below 3.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.4, so it looks safe — our inference, not a vendor statement
PowerDNS· Open Xchange
60%
3.4.114.0.24.0.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7073
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2017/dsa-3764

CVSS

5.3MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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