CVE-2019-7244 : Exploit Details and Defense Strategies

A vulnerability was found in AIDA64 version 5.99 and earlier, specifically in the kerneld.sys driver, allowing for arbitrary writes to the Model Specific Register (MSR) and potential privilege escalation.

Understanding CVE-2019-7244

This CVE identifies a security issue in the AIDA64 software.

What is CVE-2019-7244?

CVE-2019-7244 is a vulnerability in the kerneld.sys driver of AIDA64 versions prior to 5.99, enabling unauthorized access to the MSR through IOCTL 0x80112084.

The Impact of CVE-2019-7244

The vulnerability could lead to the execution of code at Ring-0 level and the escalation of privileges, posing a significant security risk.

Technical Details of CVE-2019-7244

This section provides technical insights into the vulnerability.

Vulnerability Description

The kerneld.sys driver in AIDA64 exposes a wrmsr instruction without proper MSR filtering, allowing for arbitrary writes to the MSR.

Affected Systems and Versions

AIDA64 versions 5.99 and earlier

Exploitation Mechanism

The vulnerability can be exploited through IOCTL 0x80112084, enabling unauthorized writes to the MSR and potential privilege escalation.

Mitigation and Prevention

Protecting systems from CVE-2019-7244 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update AIDA64 to version 5.99 or newer to mitigate the vulnerability
Monitor for any unauthorized system changes or privilege escalations

Long-Term Security Practices

Regularly update software and drivers to patch known vulnerabilities
Implement least privilege access controls to limit potential damage

Patching and Updates

Apply patches and updates provided by the software vendor to address the vulnerability