CVE-2019-5691 Explained : Impact and Mitigation

The NVIDIA Windows GPU Display Driver, in all versions, has a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgkDdiEscape, potentially leading to denial of service or privilege escalation.

Understanding CVE-2019-5691

This CVE involves a flaw in the NVIDIA GPU Display Driver that can result in a NULL pointer dereference, posing risks of denial of service or privilege escalation.

What is CVE-2019-5691?

The NVIDIA Windows GPU Display Driver, across all versions, contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgkDdiEscape, where a NULL pointer is dereferenced, potentially causing denial of service or privilege escalation.

The Impact of CVE-2019-5691

The vulnerability could allow attackers to exploit the driver, leading to denial of service or potentially escalating privileges on the affected system.

Technical Details of CVE-2019-5691

This section provides detailed technical information about the CVE.

Vulnerability Description

The flaw in the NVIDIA GPU Display Driver allows for a NULL pointer dereference in the kernel mode layer, specifically in the DxgkDdiEscape handler, which can result in denial of service or privilege escalation.

Affected Systems and Versions

Product: NVIDIA GPU Display Driver
Vendor: NVIDIA
Affected Versions: All

Exploitation Mechanism

The vulnerability can be exploited by triggering the NULL pointer dereference in the DxgkDdiEscape handler, potentially leading to denial of service or privilege escalation.

Mitigation and Prevention

Protecting systems from CVE-2019-5691 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Monitor vendor communications for security advisories.
Implement the principle of least privilege to limit potential impacts.

Long-Term Security Practices

Regularly update and patch all software and drivers.
Conduct security assessments and penetration testing to identify vulnerabilities.
Educate users on safe computing practices and awareness of social engineering tactics.

Patching and Updates

NVIDIA may release patches or updates to address the vulnerability.
Stay informed about security bulletins and advisories from NVIDIA for mitigation steps.