CVE-2019-3807 : An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where r

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Published 2019-01-29 17:29:00

Updated 2019-10-09 23:49:42

Source Red Hat, Inc.

View at NVD, CVE.org

Products affected by CVE-2019-3807

Powerdns » Recursor
Versions from including (>=) 4.1.0 and up to, including, (<=) 4.1.8
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2019-3807

Top countries where our scanners detected CVE-2019-3807

Top open port discovered on systems with this issue 53

IPs affected by CVE-2019-3807 337

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-3807!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-3807

EPSS FAQ

0.20%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 58 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-3807

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.4	MEDIUM	AV:N/AC:L/Au:N/C:P/I:P/A:N	10.0	4.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
3.7	LOW	CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N	1.2	2.5	Red Hat, Inc.
Attack Vector: Network Attack Complexity: High Privileges Required: Low User Interaction: Required Scope: Unchanged Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2019-3807

CWE-295 Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

Assigned by: nvd@nist.gov (Primary)
CWE-345 Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Assigned by: secalert@redhat.com (Secondary)

References for CVE-2019-3807

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-02.html

PowerDNS Security Advisory 2019-02: Insufficient validation of DNSSEC signatures — PowerDNS Recursor documentation
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3807

1669151 – (CVE-2019-3807) CVE-2019-3807 pdns-recursor: Insufficient validation of DNSSEC signature
Issue Tracking;Third Party Advisory