CVE-2021-39066 Explained : Impact and Mitigation

IBM Financial Transaction Manager 3.2.4 is vulnerable to session fixation, allowing an attacker to steal authenticated sessions.

Understanding CVE-2021-39066

This CVE affects IBM Financial Transaction Manager 3.2.4 and was made public on January 31, 2022.

What is CVE-2021-39066?

IBM Financial Transaction Manager 3.2.4 fails to invalidate session identifiers, enabling attackers to exploit this vulnerability.
IBM X-Force ID: 215040.

The Impact of CVE-2021-39066

The vulnerability has the following impact based on CVSSv3.0 metrics:

Base Score: 6.3 (Medium)
Attack Vector: Network
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low
Exploit Code Maturity: Unproven

Technical Details of CVE-2021-39066

This section covers the technical details of the vulnerability.

Vulnerability Description

IBM Financial Transaction Manager 3.2.4 allows attackers to steal authenticated sessions due to a lack of session invalidation.

Affected Systems and Versions

Product: IBM Financial Transaction Manager 3.2.4
Vendor: IBM
Version: Not Available
Status: Affected

Exploitation Mechanism

Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Vector String: CVSS:3.0/I:L/A:L/AC:L/UI:N/PR:L/C:L/AV:N/S:U/RL:O/E:U/RC:C

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation.

Immediate Steps to Take

Apply the official fix provided by IBM.
Monitor and restrict access to sensitive resources.
Educate users on session security best practices.

Long-Term Security Practices

Regularly update and patch IBM Financial Transaction Manager.
Conduct security assessments and penetration testing.
Implement multi-factor authentication where possible.

Patching and Updates

Stay informed about security advisories from IBM.
Ensure timely installation of patches and updates.
Perform regular security audits to identify vulnerabilities.