CVE-2020-36223 : Security Advisory and Response

A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).

Understanding CVE-2020-36223

This CVE involves a vulnerability in OpenLDAP that could lead to a denial of service due to a crash in the Values Return Filter control handling.

What is CVE-2020-36223?

The CVE-2020-36223 is a flaw found in OpenLDAP before version 2.4.57, which can result in a slapd crash due to issues in the Values Return Filter control handling. This vulnerability can be exploited to cause a denial of service through double free and out-of-bounds read.

The Impact of CVE-2020-36223

The impact of this CVE includes:

Denial of service due to a slapd crash
Possibility of double free and out-of-bounds read

Technical Details of CVE-2020-36223

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in OpenLDAP before version 2.4.57 leads to a slapd crash in the Values Return Filter control handling, resulting in denial of service.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions affected: n/a

Exploitation Mechanism

The vulnerability can be exploited by triggering the Values Return Filter control handling, causing a crash in slapd and leading to a denial of service.

Mitigation and Prevention

To address CVE-2020-36223, consider the following mitigation strategies:

Immediate Steps to Take

Apply the security update provided by OpenLDAP promptly
Monitor for any unusual activities on the affected systems

Long-Term Security Practices

Regularly update and patch all software and systems
Conduct security assessments and audits periodically

Patching and Updates

Stay informed about security advisories and updates from OpenLDAP
Implement a robust patch management process to apply updates promptly