CVE-2020-4976 Explained : Impact and Mitigation

IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are vulnerable to file manipulation due to weak file permissions.

Understanding CVE-2020-4976

IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 have a vulnerability that could allow a local user to read and write specific files.

What is CVE-2020-4976?

This CVE refers to a security vulnerability in IBM DB2 for Linux, UNIX, and Windows that enables a local user to manipulate files due to inadequate file permissions.

The Impact of CVE-2020-4976

The vulnerability could be exploited by a local user to access and modify specific files, potentially leading to unauthorized data disclosure or tampering.

Technical Details of CVE-2020-4976

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

Vulnerability Description

The issue arises from weak file permissions in the affected versions of IBM DB2, allowing unauthorized file access and modification.

Affected Systems and Versions

Product: DB2 for Linux, UNIX, and Windows
Vendor: IBM
Vulnerable Versions: 9.7, 10.1, 10.5, 11.1, 11.5

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: None
User Interaction: None
Exploit Code Maturity: Unproven
CVSS Base Score: 5.1 (Medium)

Mitigation and Prevention

Immediate Steps to Take:

Apply official fixes provided by IBM to address the vulnerability.
Regularly review and adjust file permissions to restrict unauthorized access. Long-Term Security Practices:
Implement the principle of least privilege to limit user access rights.
Conduct regular security assessments and audits to identify and remediate vulnerabilities.
Stay informed about security updates and patches released by IBM for DB2.