Medium severity · published Nov 9, 2018
CVE-2018-14644
An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4
5.9
CVSS
4.8%
EPSS
No
On KEV
Description
An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.8% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Recursor · Powerdns
4.0.0 through 4.1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-14644
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-14644
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644
Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html
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