CVE-2019-4057 : Vulnerability Insights and Analysis
Learn about CVE-2019-4057, a security vulnerability in IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
A potential security vulnerability exists in IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1, allowing malicious users to execute unauthorized code with root privileges.
Understanding CVE-2019-4057
This CVE involves a security vulnerability in IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1, including DB2 Connect Server.
What is CVE-2019-4057?
IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1 are susceptible to exploitation by malicious users who gain access to the DB2 instance account. This access could be used to run unauthorized code with root privileges through a fenced execution process.
The Impact of CVE-2019-4057
- CVSS Base Score: 6.7 (Medium Severity)
- Attack Vector: Local
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: High
- Exploit Code Maturity: Unproven
- User Interaction: None
- Remediation Level: Official Fix
- Report Confidence: Confirmed
Technical Details of CVE-2019-4057
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows a malicious user with DB2 instance account access to exploit a fenced execution process to execute unauthorized code with root privileges.
Affected Systems and Versions
- IBM DB2 for Linux, UNIX, and Windows 9.7
- IBM DB2 for Linux, UNIX, and Windows 10.1
- IBM DB2 for Linux, UNIX, and Windows 10.5
- IBM DB2 for Linux, UNIX, and Windows 11.1
Exploitation Mechanism
The vulnerability can be exploited by malicious users gaining access to the DB2 instance account to run unauthorized code with root privileges.
Mitigation and Prevention
To address CVE-2019-4057, follow these mitigation steps:
Immediate Steps to Take
- Apply the official fix provided by IBM.
- Monitor for any unauthorized access to the DB2 instance account.
Long-Term Security Practices
- Implement strong access controls and authentication mechanisms.
- Regularly update and patch the DB2 software.
- Conduct security training for personnel to prevent unauthorized access.
Patching and Updates
Ensure that you regularly update and patch IBM DB2 for Linux, UNIX, and Windows to mitigate the vulnerability.