Vulnerability Report

CVE-2018-14644

Title: Powerdns Recursor Improper Input Validation

Improper Input Validation

Proof Of Concept

No public PoC currently indexed for CVE-2018-14644.

CWE Category CWE-20
Published Date Nov 09, 2018
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.3 CVSS v3.0
Exploit Probability (EPSS)
4.84%

Vulnerability Summary

CVE-2018-14644: 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.

Impacted Vendors

P
powerdns 1

Reference Links

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html
CVSS v3.0
Source Entity [email protected]
Severity MEDIUM
5.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v3.0
Source Entity [email protected]
Severity MEDIUM
5.9
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-14644 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Stack

No specific products linked.