CVE-2019-3883 : Security Advisory and Response

CVE-2019-3883 is a vulnerability in 389-ds-base versions up to 1.4.1.2 that could allow an unauthenticated attacker to cause a Denial of Service (DoS) by exploiting worker threads. This CVE was published on April 17, 2019, by Red Hat.

Understanding CVE-2019-3883

In versions of 389-ds-base up to 1.4.1.2, worker threads handling requests have a timeout vulnerability that could be exploited for a DoS attack.

What is CVE-2019-3883?

This CVE affects 389-ds-base versions up to 1.4.1.2, where worker threads handling requests have a timeout vulnerability.

The Impact of CVE-2019-3883

An unauthenticated attacker could exploit this vulnerability to cause a Denial of Service (DoS) by hanging worker threads with LDAP requests.

Technical Details of CVE-2019-3883

In-depth technical information about the vulnerability.

Vulnerability Description

Worker threads in 389-ds-base versions up to 1.4.1.2 have a timeout issue with unencrypted requests, potentially leading to DoS attacks.

Affected Systems and Versions

Vendor: Red Hat
Product: 389-ds-base
Affected Version: up to 1.4.1.2

Exploitation Mechanism

Attacker generates LDAP requests without authentication, causing worker threads to hang and leading to a DoS.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Apply security updates promptly to mitigate the vulnerability.
Monitor LDAP requests for unusual patterns that could indicate an ongoing attack.

Long-Term Security Practices

Implement SSL/TLS encryption for LDAP connections to prevent exploitation of the timeout vulnerability.
Regularly review and update security configurations to address emerging threats.

Patching and Updates

Refer to vendor advisories and security updates for patches to fix the vulnerability.