CVE-2021-29678 : Security Advisory and Response

This article provides an overview of CVE-2021-29678, a vulnerability found in IBM Db2 for Linux, UNIX, and Windows that could allow unauthorized access to databases and files.

Understanding CVE-2021-29678

CVE-2021-29678 is a security vulnerability in IBM Db2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5. It enables a user with DBADM authority to access other databases and read or modify files.

What is CVE-2021-29678?

The vulnerability in IBM Db2 for Linux, UNIX, and Windows allows a user with elevated authority to perform unauthorized actions, potentially compromising data confidentiality and integrity.

The Impact of CVE-2021-29678

With a CVSS base score of 8.7 (High severity), this vulnerability can result in unauthorized access to sensitive information, leading to data breaches and unauthorized modifications.

Technical Details of CVE-2021-29678

The following technical details further explain the vulnerability:

Vulnerability Description

DB2 for Linux, UNIX, and Windows versions mentioned are susceptible to unauthorized database and file access by users with DBADM authority.

Affected Systems and Versions

IBM Db2 versions 9.7, 10.1, 10.5, 11.1, and 11.5 running on Linux, UNIX, and Windows platforms are affected by this vulnerability.

Exploitation Mechanism

Unauthorized users with elevated DBADM authority can exploit this vulnerability to gain unauthorized access to other databases and files.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-29678, consider the following steps:

Immediate Steps to Take

IBM recommends applying official fixes and patches provided by the vendor.
Review and restrict database privileges to authorized users only.

Long-Term Security Practices

Regularly monitor and audit user activities within the database system.
Provide security training to database administrators on best practices.

Patching and Updates

Ensure that you regularly update your IBM Db2 installations to the latest patched versions to address known vulnerabilities and enhance system security.