CVE-2019-4423 : Security Advisory and Response

IBM Sterling File Gateway versions 2.2.0.0 through 6.0.1.0 have a vulnerability that allows remote attackers to navigate directories, potentially accessing arbitrary files on the system.

Understanding CVE-2019-4423

This CVE involves a system vulnerability in IBM Sterling File Gateway versions 2.2.0.0 through 6.0.1.0, enabling attackers to remotely navigate directories.

What is CVE-2019-4423?

The vulnerability in IBM Sterling File Gateway versions 2.2.0.0 through 6.0.1.0 allows attackers to access arbitrary files on the system by sending a URL request with specific sequences.

The Impact of CVE-2019-4423

CVSS Base Score: 5.3 (Medium Severity)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: Low
Integrity Impact: None
Availability Impact: None
Privileges Required: None
User Interaction: None
Exploit Code Maturity: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed

Technical Details of CVE-2019-4423

Vulnerability Description

The vulnerability allows attackers to navigate directories remotely, potentially accessing arbitrary files on the system.

Affected Systems and Versions

Product: Sterling File Gateway
Vendor: IBM
Affected Versions: 2.2.0.0, 6.0.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a URL request with specific sequences to access arbitrary files on the system.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM.
Monitor for any unusual file access activities.
Implement network segmentation to limit attacker movement.

Long-Term Security Practices

Regularly update and patch the Sterling File Gateway software.
Conduct security assessments and penetration testing.

Patching and Updates

Ensure all systems are updated with the latest patches and security fixes.