Is CVE-2018-14644 in the CISA KEV catalog?

No. CVE-2018-14644 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-14644?

CVE-2018-14644 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2018-14644?

CVE-2018-14644 has an EPSS score of 4.84% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-14644?

Upgrade pdns-recursor on debian 11 to 4.1.7-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2018-14644

MEDIUMEPSS 91th pctl

5.3

CVSS v3

NVD

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.

CWE-20Improper Input Validation

How to fix

Remediation Available

pdns-recursorDebian

Fixed in:4.1.7-1CVE-2018-14644

pdnsUbuntu

Fixed in:4.0.0~alpha2-3ubuntu0.1~esm1USN-7203-1

Fixed in:4.1.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.2.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.5.3-1ubuntu0.1~esm1USN-7203-1

pdns-recursorUbuntu

Fixed in:4.0.0~alpha2-2ubuntu0.1+esm1USN-7203-1

Fixed in:4.1.1-2ubuntu0.1~esm1USN-7203-1

Fixed in:4.2.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.6.0-1ubuntu1+esm1USN-7203-1

pdns-serverUbuntu

Fixed in:4.0.0~alpha2-3ubuntu0.1~esm1USN-7203-1

Fixed in:4.1.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.2.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.5.3-1ubuntu0.1~esm1USN-7203-1

pdns-toolsUbuntu

Fixed in:4.0.0~alpha2-3ubuntu0.1~esm1USN-7203-1

Fixed in:4.1.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.2.1-1ubuntu0.1~esm1USN-7203-1

Fixed in:4.5.3-1ubuntu0.1~esm1USN-7203-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

4.84%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

docs.powerdns.com

Third-Party Advisory1

bugzilla.redhat.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.