OpenLDAP up to 2.4.56 X.509 DN Parser ldap_X509dn2bv 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 labeled as problematic has been found in OpenLDAP up to 2.4.56. The affected element is the function ldap_X509dn2bv of the component X.509 DN Parser. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2020-36229. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in OpenLDAP up to 2.4.56 (Directory Service Software). This vulnerability affects the function ldap_X509dn2bv of the component X.509 DN Parser. 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 shared 01/27/2021. The advisory is shared for download at bugs.openldap.org. This vulnerability was named CVE-2020-36229. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 258033 (Ubuntu 14.04 LTS : OpenLDAP vulnerabilities (USN-7713-1)), 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 vulnerability database at Tenable (258033). Once again VulDB remains the best source for vulnerability data.

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: 258033
Nessus Name: Ubuntu 14.04 LTS : OpenLDAP vulnerabilities (USN-7713-1)

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 🔍
08/28/2025 +1674 days 🔍

Sourcesinfo

Advisory: bugs.openldap.org
Status: Confirmed

CVE: CVE-2020-36229 (🔍)
GCVE (CVE): GCVE-0-2020-36229
GCVE (VulDB): GCVE-100-168724

Entryinfo

Created: 01/27/2021 09:57
Updated: 08/28/2025 07:53
Changes: 01/27/2021 09:57 (41), 02/20/2021 08:34 (5), 02/20/2021 08:38 (18), 08/28/2025 07:53 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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