CVE-2020-25692

openldap: NULL pointer dereference for unauthenticated packet in slapd

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · October 19, 2020

Updated · August 5, 2026

Description

A NULL pointer dereference flaw was found in the OpenLDAP server, during a request for renaming RDNs. This flaw allows a remote, unauthenticated attacker to crash the slapd process by sending a specially crafted request, causing a denial of service. The highest threat from this vulnerability is to system availability.

Statement

This vulnerability affects the server side only. As a result, OpenLDAP client components, such as the component shipped in Red Hat Enterprise Linux 8, are not affected by this flaw.

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 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference