OpenLDAP up to 2.4.56 bv_len denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenLDAP up to 2.4.56. It has been rated as problematic. This vulnerability affects the function bv_len. This manipulation causes denial of service. This vulnerability is handled as CVE-2020-36226. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in OpenLDAP up to 2.4.56 (Directory Service Software). It has been declared as problematic. Affected by this vulnerability is the function bv_len. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was released 01/27/2021. The advisory is shared at bugs.openldap.org. This vulnerability is known as CVE-2020-36226. Technical details are known, but no exploit is available.

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 2.4.57 eliminates this vulnerability. The upgrade is hosted for download at git.openldap.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.openldap.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (251223) and CERT Bund (WID-SEC-2023-1127). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

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

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

0-Day Time: 🔍

Upgrade: OpenLDAP 2.4.57
Patch: git.openldap.org

Timelineinfo

01/25/2021 🔍
01/27/2021 +2 days 🔍
01/27/2021 +0 days 🔍
08/25/2025 +1671 days 🔍

Sourcesinfo

Advisory: bugs.openldap.org
Status: Confirmed

CVE: CVE-2020-36226 (🔍)
GCVE (CVE): GCVE-0-2020-36226
GCVE (VulDB): GCVE-100-168721
CERT Bund: WID-SEC-2023-1127 - OpenLDAP: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 01/27/2021 09:56
Updated: 08/25/2025 11:49
Changes: 01/27/2021 09:56 (40), 02/20/2021 08:09 (5), 02/20/2021 08:12 (18), 08/18/2025 23:04 (17), 08/25/2025 11:49 (7)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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