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Ubuntu 6197-1: OpenLDAP DoS Exploit Due To Crafted Input

ubuntu
Calendar Grey July 3, 2023
Dist Ubuntu Esm H88
Resolve OpenLDAP crash issues on Ubuntu by backing up data, updating packages, upgrading OpenLDAP, reviewing changes, restarting the service, and verifying functionality
OpenLDAP could be made to crash if it received specially crafted input.

Summary

OpenLDAP could be made to crash if it received specially crafted

input.

Software Description:

- openldap: Lightweight Directory Access Protocol

Details:

It was discovered that OpenLDAP was not properly performing bounds checks

when executing functions related to LDAP URLs. An attacker could possibly

use this issue to cause a denial of service.

Topics%20covered

Topics Covered

security advisory Ubuntu OpenLDAP Denial of Service service interruption

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   slapd                           2.4.45+dfsg-1ubuntu1.11+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   slapd                           2.4.42+dfsg-2ubuntu3.13+esm2

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   slapd                           2.4.31-1+nmu2ubuntu8.5+esm6

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

References

  https://ubuntu.com/security/notices/USN-6197-1

  CVE-2023-2953

Severity
critical
Lowest
Low
Medium
High
Critical

July 03, 2023

Topics%20covered

Topics Covered

security advisory Ubuntu OpenLDAP Denial of Service service interruption

Package Information

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