CVE-2018-11064 : Exploit Details and Defense Strategies

Dell EMC Unity and UnityVSA are affected by a vulnerability related to incorrect file permissions, potentially allowing a locally authenticated malicious user to execute arbitrary code with elevated privileges.

Understanding CVE-2018-11064

What is CVE-2018-11064?

The vulnerability in Dell EMC Unity and UnityVSA versions 4.3.0.x and 4.3.1.x is due to incorrect file permissions, enabling unauthorized modification of critical library files.

The Impact of CVE-2018-11064

If exploited, this vulnerability could lead to the execution of arbitrary code with elevated privileges by a locally authenticated malicious user. However, it does not directly impact user file systems.

Technical Details of CVE-2018-11064

Vulnerability Description

The vulnerability arises from incorrect file permissions in Dell EMC Unity and UnityVSA versions 4.3.0.x and 4.3.1.x, allowing unauthorized modification of critical library files.

Affected Systems and Versions

Affected Products: Dell EMC Unity, Dell EMC UnityVSA
Vulnerable Versions: 4.3.0.x, 4.3.1.x

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security patches provided by Dell EMC for the affected versions.
Monitor and restrict access to critical system files to prevent unauthorized modifications.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights.
Regularly review and update file permissions to ensure proper security measures.

Patching and Updates

Regularly check for security updates and patches from Dell EMC to address known vulnerabilities and enhance system security.