Apple macOS up to 11.3 OpenLDAP denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Apple macOS up to 11.3. This issue affects some unknown processing of the component OpenLDAP. The manipulation results in denial of service. This vulnerability is known as CVE-2020-36226. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple macOS up to 11.3 (Operating System). It has been classified as problematic. Affected is an unknown code block of the component OpenLDAP. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was published 05/24/2021 as HT212529 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2020-36226. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499. The advisory points out:

A remote attacker may be able to cause a denial of service

The vulnerability scanner Nessus provides a plugin with the ID 251223 (Linux Distros Unpatched Vulnerability : CVE-2020-36226), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 11.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

This issue was addressed with improved checks.

The vulnerability is also documented in the databases at Tenable (251223) and CERT Bund (WID-SEC-2023-1127). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Ubuntu Linux
  • SUSE Linux
  • Open Source OpenLDAP
  • Hitachi Energy RTU500
  • Splunk Splunk Enterprise

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 251223
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-36226

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 11.4

Timelineinfo

01/25/2021 🔍
05/24/2021 +118 days 🔍
05/24/2021 +0 days 🔍
05/25/2021 +1 days 🔍
08/25/2025 +1553 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212529
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-36226 (🔍)
GCVE (CVE): GCVE-0-2020-36226
GCVE (VulDB): GCVE-100-175740
CERT Bund: WID-SEC-2023-1127 - OpenLDAP: Mehrere Schwachstellen ermöglichen Denial of Service

scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 05/25/2021 14:23
Updated: 08/25/2025 11:49
Changes: 05/25/2021 14:23 (17), 05/25/2021 14:26 (29), 05/28/2021 14:14 (6), 05/28/2021 14:18 (18), 08/18/2025 23:04 (17), 08/25/2025 11:49 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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