CVE-2020-4387 : Vulnerability Insights and Analysis

IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are affected by a vulnerability that could allow a local user to obtain sensitive information using a race condition of a symbolic link.

Understanding CVE-2020-4387

IBM DB2 for Linux, UNIX, and Windows is susceptible to a security issue that may lead to information disclosure.

What is CVE-2020-4387?

CVE-2020-4387 is a vulnerability in IBM DB2 for Linux, UNIX, and Windows that enables a local user to access confidential data through a symbolic link race condition.

The Impact of CVE-2020-4387

The vulnerability poses a medium-severity risk with a CVSS base score of 6.2, allowing unauthorized access to high-confidentiality information.

Technical Details of CVE-2020-4387

IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are affected by this security flaw.

Vulnerability Description

The vulnerability in IBM DB2 allows a local user to exploit a race condition in symbolic links to obtain sensitive information.

Affected Systems and Versions

DB2 for Linux- UNIX and Windows 9.7
DB2 for Linux- UNIX and Windows 10.1
DB2 for Linux- UNIX and Windows 10.5
DB2 for Linux- UNIX and Windows 11.1
DB2 for Linux- UNIX and Windows 11.5

Exploitation Mechanism

The vulnerability can be exploited by a local user through a race condition in symbolic links, potentially leading to unauthorized access to confidential data.

Mitigation and Prevention

Immediate Steps to Take:

Apply the official fix provided by IBM to address the vulnerability.
Monitor for any unauthorized access to sensitive information. Long-Term Security Practices:
Regularly update and patch IBM DB2 to prevent security vulnerabilities.
Implement least privilege access controls to limit user capabilities.
Conduct security training to educate users on best practices.
Stay informed about security bulletins and updates from IBM.

Patching and Updates

IBM has released an official fix to address the vulnerability in IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5.