CVE-2020-25692

Summary

CVE	CVE-2020-25692
State	PUBLISHED
Assigner	redhat
Source Priority	CVE Program / NVD first with legacy fallback
Published	2020-12-08 01:15:12 UTC
Updated	2026-10-14 10:17:33 UTC
Description	A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

Problem Types: CWE-476 | CWE-476 CWE-476

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
2.0	[email protected]	Primary	5		`AV:N/AC:L/Au:N/C:N/I:N/A:P`

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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

Access Vector

Network

Access Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

Type	Vendor	Product	Version	Update	Edition	Language
Application	Netapp	Cloud Backup	-	All	All	All
Hardware	Netapp	Solidfire Baseboard Management Controller	-	All	All	All
Operating System	Netapp	Solidfire Baseboard Management Controller Firmware	-	All	All	All
Application	Openldap	Openldap	All	All	All	All
Operating System	Redhat	Enterprise Linux	5.0	All	All	All
Operating System	Redhat	Enterprise Linux	6.0	All	All	All
Operating System	Redhat	Enterprise Linux	7.0	All	All	All

Source	Vendor	Product	Version	Platforms
CNA	Na	Openldap	affected openldap 2.4.55	Not specified
ADP	Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	affected V3.1.0 V3.1.5 custom	Not specified
ADP	Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	affected V3.1.0 V3.1.5 custom	Not specified
ADP	Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	affected V3.1.0 V3.1.5 custom	Not specified
ADP	Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	affected V3.1.0 V3.1.5 custom	Not specified
ADP	Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	affected V3.1.0 V3.1.5 custom	Not specified

Reference	Source	Link	Tags
cert-portal.siemens.com/productcert/html/ssa-398330.html	0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	cert-portal.siemens.com
1894567 – (CVE-2020-25692) CVE-2020-25692 openldap: NULL pointer dereference for unauthenticated packet in slapd	af854a3a-2127-422b-91ae-364da2661108	bugzilla.redhat.com	Issue Tracking, Patch, Third Party Advisory
CVE-2020-25692 OpenLDAP Vulnerability in NetApp Products \| NetApp Product Security	af854a3a-2127-422b-91ae-364da2661108	security.netapp.com	Third Party Advisory
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

159169 Oracle Enterprise Linux Security Update for openldap (ELSA-2021-1389)
239251 Red Hat Update for openldap (RHSA-2021:1389)
352373 Amazon Linux Security Advisory for openldap: ALAS2-2021-1638
377233 Alibaba Cloud Linux Security Update for openldap (ALINUX2-SA-2021:0023)
500480 Alpine Linux Security Update for openldap
591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
670194 EulerOS Security Update for openldap (EulerOS-SA-2021-1693)
670856 EulerOS Security Update for openldap (EulerOS-SA-2021-1157)
750600 OpenSUSE Security Update for openldap2 (openSUSE-SU-2020:1918-1)
750602 OpenSUSE Security Update for openldap2 (openSUSE-SU-2020:1920-1)
900109 CBL-Mariner Linux Security Update for openldap 2.4.50
902896 Common Base Linux Mariner (CBL-Mariner) Security Update for openldap (3653)