CVE-2018-1711 Explained : Impact and Mitigation

IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1 have a vulnerability that could allow a local user to gain elevated privileges.

Understanding CVE-2018-1711

This CVE involves a privilege escalation vulnerability in IBM DB2 for Linux, UNIX, and Windows.

What is CVE-2018-1711?

The vulnerability in IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, and 11.1, including DB2 Connect Server, allows a user with local access to potentially gain elevated privileges. The issue arises when the user can modify columns of existing tasks.

The Impact of CVE-2018-1711

CVSS Base Score: 8.4 (High Severity)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Exploit Code Maturity: Unproven
Privileges Required: None
User Interaction: None
Remediation Level: Official Fix
Report Confidence: Confirmed
Vector String: CVSS:3.0/A:H/AC:L/AV:L/C:H/I:H/PR:N/S:U/UI:N/E:U/RC:C/RL:O
IBM X-Force ID: 146369

Technical Details of CVE-2018-1711

Vulnerability Description

The vulnerability allows a local user to gain elevated privileges by modifying columns of existing tasks in IBM DB2 for Linux, UNIX, and Windows.

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 issue occurs when a user with local access can manipulate columns of existing tasks, leading to privilege escalation.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM
Restrict local user access to critical systems
Monitor and audit user activities regularly

Long-Term Security Practices

Implement the principle of least privilege
Conduct regular security training for users
Keep systems and software up to date

Patching and Updates

Ensure that all affected systems are updated with the latest patches and security fixes.