CVE-2019-4523 : Security Advisory and Response
Learn about CVE-2019-4523, a critical vulnerability in IBM DB2 High Performance Unload load for LUW versions 6.1 and 6.5, allowing local attackers to execute arbitrary code with root privileges. Find mitigation steps and preventive measures here.
IBM DB2 High Performance Unload load for LUW versions 6.1 and 6.5 has a vulnerability related to a buffer overflow, potentially allowing a local attacker to execute arbitrary code with root privileges.
Understanding CVE-2019-4523
This CVE involves a critical vulnerability in IBM DB2 High Performance Unload load for LUW versions 6.1 and 6.5, reported by IBM X-Force.
What is CVE-2019-4523?
The vulnerability in versions 6.1 and 6.5 of IBM DB2 High Performance Unload load for LUW allows a local attacker to exploit a buffer overflow due to inadequate bounds checking. This could lead to the execution of arbitrary code with root privileges on the affected system.
The Impact of CVE-2019-4523
- CVSS Score: 8.4 (High)
- Attack Vector: Local
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: None
- Exploit Code Maturity: Unproven
- Remediation Level: Official Fix
- Report Confidence: Confirmed
Technical Details of CVE-2019-4523
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is due to a buffer overflow in IBM DB2 High Performance Unload load for LUW versions 6.1 and 6.5, resulting from inadequate bounds checking.
Affected Systems and Versions
- Affected Product: IBM DB2 High Performance Unload load for LUW
- Affected Versions: 6.1, 6.5
Exploitation Mechanism
The vulnerability can be exploited by a local attacker to execute arbitrary code with root privileges on the system.
Mitigation and Prevention
To address CVE-2019-4523, follow these mitigation strategies:
Immediate Steps to Take
- Apply the official fix provided by IBM to patch the vulnerability.
- Monitor IBM's security bulletins for updates and advisories.
Long-Term Security Practices
- Regularly update and patch all software and systems to prevent vulnerabilities.
- Implement least privilege access controls to limit the impact of potential exploits.
- Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
Ensure that all systems running IBM DB2 High Performance Unload load for LUW are updated with the latest patches and security fixes.