CVE-2018-1724 : Exploit Details and Defense Strategies

IBM Spectrum LSF versions 9.1.1, 9.1.2, 9.1.3, and 10.1 are affected by improper file permission settings that could allow a local user to modify their job user during job submission.

Understanding CVE-2018-1724

This CVE involves a vulnerability in IBM Spectrum LSF that could lead to privilege escalation for local users.

What is CVE-2018-1724?

The vulnerability in IBM Spectrum LSF versions 9.1.1, 9.1.2, 9.1.3, and 10.1 allows local users to change their job user during job submission due to incorrect file permission settings.
Identified with IBM X-Force ID 147439.

The Impact of CVE-2018-1724

CVSS Base Score: 5.9 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low
Privileges Required: None
Exploit Code Maturity: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed

Technical Details of CVE-2018-1724

Vulnerability Description

Local users can exploit this vulnerability to escalate their privileges by modifying their job user during job submission.

Affected Systems and Versions

IBM Spectrum LSF versions 9.1.1, 9.1.2, 9.1.3, and 10.1

Exploitation Mechanism

Local users can leverage the improper file permission settings to manipulate job user details.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability.
Monitor job submissions for any unauthorized user modifications.

Long-Term Security Practices

Regularly review and adjust file permission settings to restrict unauthorized access.
Educate users on secure job submission practices to prevent privilege escalation.

Patching and Updates

Keep IBM Spectrum LSF up to date with the latest patches and security updates.