Medium severity · published Sep 11, 2018
CVE-2016-7073
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…
5.9
CVSS
1.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AU
Authoritative · Powerdns
before 3.4.11; 4.0.0 before 4.0.2 · source: NVD
DL
Debian Linux · Debian
8.0 · source: NVD
RE
Recursor · Powerdns
before 3.7.4; 4.0.0 before 4.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7073
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-7073
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7073
Vendor Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/
Third Party Advisory
https://www.debian.org/security/2017/dsa-3764
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