CVE-2020-15719

openldap: Certificate validation incorrectly matches name against CN-ID

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Severity

Low

Red Hat Product Security

4.2

CVSS 3.1

Review impact separately from score.

Published · August 19, 2019

Updated · November 22, 2025

Description

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE-297 · Improper Validation of Certificate with Host Mismatch