CVE-2019-7630 : What You Need to Know
Discover the security vulnerability in Gigabyte APP Center's gdrv.sys file prior to version 19.0227.1, allowing unauthorized MSR writes and potential privilege escalation. Learn how to mitigate the risk.
A vulnerability was found in the gdrv.sys file in Gigabyte APP Center prior to version 19.0227.1. This driver vulnerability allows unauthorized writes to a Model Specific Register (MSR), potentially leading to privilege escalation.
Understanding CVE-2019-7630
This CVE identifies a security flaw in Gigabyte APP Center's gdrv.sys file that could be exploited for privilege escalation.
What is CVE-2019-7630?
The vulnerability in gdrv.sys exposes a wrmsr instruction through IOCTL 0xC3502580, allowing unauthorized writes to an MSR, which can lead to the execution of Ring-0 code and privilege escalation.
The Impact of CVE-2019-7630
Exploiting this vulnerability could result in an attacker gaining elevated privileges on the affected system, potentially leading to further compromise.
Technical Details of CVE-2019-7630
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerable driver in Gigabyte APP Center fails to properly filter the target MSR, enabling unauthorized writes that can trigger the execution of Ring-0 code.
Affected Systems and Versions
- Affected System: Gigabyte APP Center
- Affected Version: Prior to 19.0227.1
Exploitation Mechanism
The vulnerability allows attackers to perform unauthorized writes to an MSR, leading to the execution of Ring-0 code and potential privilege escalation.
Mitigation and Prevention
Protecting systems from CVE-2019-7630 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Gigabyte APP Center to version 19.0227.1 or later to mitigate the vulnerability.
- Monitor system logs for any suspicious activities that could indicate exploitation.
Long-Term Security Practices
- Regularly update and patch all software to prevent known vulnerabilities.
- Implement the principle of least privilege to limit the impact of potential privilege escalation attacks.
Patching and Updates
- Apply security patches and updates provided by Gigabyte to address the vulnerability in gdrv.sys.