CVE-2019-4520 : What You Need to Know

IBM Security Directory Server 6.4.0 is affected by a vulnerability that allows remote attackers to potentially guess account credentials due to an inadequate account lockout setting.

Understanding CVE-2019-4520

This CVE involves a security weakness in IBM Security Directory Server 6.4.0 that could be exploited by attackers to systematically guess account credentials.

What is CVE-2019-4520?

The account lockout setting in IBM Security Directory Server 6.4.0 is insufficient, enabling remote attackers to potentially guess account credentials.

The Impact of CVE-2019-4520

CVSS Base Score: 7.5 (High)
CVSS Vector: CVSS:3.0/AC:L/UI:N/PR:N/A:N/I:N/AV:N/S:U/C:H/RC:C/RL:O/E:U
Confidentiality Impact: High
Integrity Impact: None
Attack Vector: Network
Exploit Code Maturity: Unproven
Report Confidence: Confirmed

Technical Details of CVE-2019-4520

IBM Security Directory Server 6.4.0 vulnerability details.

Vulnerability Description

The account lockout setting in IBM Security Directory Server 6.4.0 is inadequate, allowing remote attackers to systematically guess account credentials.

Affected Systems and Versions

Affected Product: Security Directory Server
Vendor: IBM
Affected Version: 6.4.0

Exploitation Mechanism

Attack Complexity: Low
Privileges Required: None
User Interaction: None

Mitigation and Prevention

Steps to address and prevent the CVE-2019-4520 vulnerability.

Immediate Steps to Take

Update IBM Security Directory Server to the latest version.
Monitor and restrict access to the server.
Implement strong password policies.

Long-Term Security Practices

Regularly review and update security configurations.
Conduct security training for staff to recognize social engineering attacks.

Patching and Updates

Apply official fixes provided by IBM.