VDB-230145 · CVE-2023-2953 · EUVD-2023-34399

OpenLDAP ber_memalloc_x null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in OpenLDAP. This vulnerability affects the function ber_memalloc_x. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2023-2953. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in OpenLDAP (Directory Service Software) (version now known). It has been classified as problematic. This affects the function ber_memalloc_x. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The weakness was published 05/29/2023. The advisory is shared at bugs.openldap.org. This vulnerability is uniquely identified as CVE-2023-2953 since 05/29/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 235538 (RockyLinux 8 : openldap (RLSA-2024:4264)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (235538) and EUVD (EUVD-2023-34399). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Directory Service Software

Name

OpenLDAP

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 235538
Nessus Name: RockyLinux 8 : openldap (RLSA-2024:4264)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/29/2023 🔍
05/29/2023 +0 days 🔍
05/29/2023 +0 days 🔍
12/19/2025 +935 days 🔍

Sourcesinfo

Advisory: bugs.openldap.org
Status: Confirmed

CVE: CVE-2023-2953 (🔍)
GCVE (CVE): GCVE-0-2023-2953
GCVE (VulDB): GCVE-100-230145
EUVD: 🔍

Entryinfo

Created: 05/29/2023 10:27
Updated: 12/19/2025 21:48
Changes: 05/29/2023 10:27 (37), 06/21/2023 19:35 (1), 06/21/2023 19:42 (11), 01/10/2025 23:27 (26), 05/08/2025 15:48 (2), 12/19/2025 21:48 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.