CVE-2021-21790 : What You Need to Know

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests, potentially leading to sensitive information disclosure. This vulnerability has been assigned a CVSS base score of 6.5 indicating a medium severity.

Understanding CVE-2021-21790

This CVE describes an information disclosure vulnerability in IOBit Advanced SystemCare Ultimate 14.2.0.220.

What is CVE-2021-21790?

CVE-2021-21790 is an information disclosure vulnerability in the IOBit Advanced SystemCare Ultimate 14.2.0.220 driver, allowing privileged I/O reads that could expose sensitive information from the kernel.

The Impact of CVE-2021-21790

The impact of this vulnerability is considered medium, with a base score of 6.5. It could potentially lead to the unauthorized disclosure of sensitive data.

Technical Details of CVE-2021-21790

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability is due to how the driver handles Privileged I/O read requests, allowing specially crafted I/O request packets to trigger privileged reads in the driver context.

Affected Systems and Versions

IOBit Advanced SystemCare Ultimate 14.2.0.220 is affected by this vulnerability.

Exploitation Mechanism

By sending a specially crafted I/O request packet, an attacker can exploit this vulnerability to read sensitive device data from the I/O device.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-21790.

Immediate Steps to Take

Implement vendor patches or updates provided to address the vulnerability.

Long-Term Security Practices

Regularly update your software and system to protect against known vulnerabilities.

Patching and Updates

Stay informed about security bulletins and advisories from IOBit and apply patches promptly to secure your systems.