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Ubuntu 14.04 LTS USN-7713-1 OpenLDAP Critical DoS Issues

ubuntu
Calendar Grey August 29, 2025
Dist Ubuntu Esm H88
This bulletin covers essential security patches for OpenLDAP within Ubuntu 14.04 LTS to address serious Denial of Service vulnerabilities.
Several security issues were fixed in OpenLDAP.

Summary

Several security issues were fixed in OpenLDAP.

Software Description:

- openldap: Lightweight Directory Access Protocol

Details:

It was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A

remote attacker could possibly use this issue to cause OpenLDAP to crash,

resulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)

Pasi Saarinen discovered that OpenLDAP incorrectly handled certain short

timestamps. A remote attacker could possibly use this issue to cause

OpenLDAP to crash, resulting in a denial of service. (CVE-2021-27212)

Topics%20covered

Topics Covered

security advisory denial of service security issue critical Ubuntu openldap

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS
  slapd                           2.4.31-1+nmu2ubuntu8.5+esm8
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7713-1

CVE-2020-36229, CVE-2020-36230, CVE-2021-27212

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7713-1

Topics%20covered

Topics Covered

security advisory denial of service security issue critical Ubuntu openldap

Package Information

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