CVE-2019-4563 : Security Advisory and Response

IBM Security Directory Server 6.4.0 is affected by a vulnerability where the secure attribute is not enabled for authorization tokens and session cookies, potentially allowing attackers to intercept cookie values.

Understanding CVE-2019-4563

This CVE involves a security issue in IBM Security Directory Server 6.4.0 that could lead to information disclosure.

What is CVE-2019-4563?

The vulnerability in IBM Security Directory Server 6.4.0 allows attackers to obtain cookie values by sending HTTP links to users or embedding links on visited websites.

The Impact of CVE-2019-4563

CVSS Base Score: 3.7 (Low Severity)
Attack Vector: Network
Attack Complexity: High
Confidentiality Impact: Low
Integrity Impact: None
Privileges Required: None
Exploit Code Maturity: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed
This vulnerability has a low severity base score but could potentially lead to information disclosure.

Technical Details of CVE-2019-4563

IBM Security Directory Server 6.4.0 vulnerability details.

Vulnerability Description

The setting for the secure attribute is not enabled in IBM Security Directory Server 6.4.0 for authorization tokens and session cookies, allowing potential interception of cookie values.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit this vulnerability by sending HTTP links to users or embedding links on websites to intercept cookie values.

Mitigation and Prevention

Protecting systems from CVE-2019-4563.

Immediate Steps to Take

Enable the secure attribute for authorization tokens and session cookies.
Educate users about the risks of clicking on unknown links.

Long-Term Security Practices

Regularly update and patch the IBM Security Directory Server.
Implement secure cookie handling practices to prevent interception.

Patching and Updates

Apply official fixes provided by IBM to address this vulnerability.