CVE-2019-4169 : Exploit Details and Defense Strategies

This CVE involves a vulnerability in IBM Open Power Firmware versions OP910 and OP920 that allows access to the BMC via IPMI using the default OpenBMC password, even after changing it. The CVSS base score is 8.1 (High Severity).

Understanding CVE-2019-4169

This CVE was published on August 16, 2019, by IBM X-Force under ID 158702.

What is CVE-2019-4169?

The default OpenBMC password can be exploited to access the BMC via IPMI, even after changing the BMC password away from the default one.

The Impact of CVE-2019-4169

CVSS Base Score: 8.1 (High Severity)
Attack Vector: ADJACENT_NETWORK
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: NONE
Exploit Code Maturity: UNPROVEN
Privileges Required: NONE
User Interaction: NONE
Remediation Level: OFFICIAL_FIX
Report Confidence: CONFIRMED

Technical Details of CVE-2019-4169

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows unauthorized access to the BMC via IPMI using the default OpenBMC password, even after changing it.

Affected Systems and Versions

Affected Products: P9 OpenPOWER, P9 OpenPower
Vendor: IBM
Affected Versions: OP910, OP920

Exploitation Mechanism

The exploit involves utilizing the default OpenBMC password to gain unauthorized access to the BMC via IPMI.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Change the default OpenBMC password immediately.
Implement strong password policies for BMC access.
Monitor BMC access logs for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and security patches for BMC devices.
Conduct security training for personnel accessing BMC systems.

Patching and Updates

Apply official fixes and updates provided by IBM to address this vulnerability.