CVE-2021-38593 : Security Advisory and Response
Learn about CVE-2021-38593, a vulnerability in Qt versions before 5.15.6 and 6.x through 6.1.2, allowing malicious actors to execute arbitrary code. Find out how to mitigate the risks.
A detailed overview of the CVE-2021-38593 vulnerability in Qt versions before 5.15.6 and 6.x through 6.1.2.
Understanding CVE-2021-38593
This section provides insights into the nature and impact of the vulnerability.
What is CVE-2021-38593?
Qt versions before 5.15.6 and 6.x through 6.1.2 are susceptible to an out-of-bounds write in QOutlineMapper::convertPath, triggered by QRasterPaintEngine::fill and QPaintEngineEx::stroke.
The Impact of CVE-2021-38593
The vulnerability allows threat actors to execute arbitrary code, potentially leading to a denial of service or sensitive information exposure.
Technical Details of CVE-2021-38593
Explore the technical aspects related to CVE-2021-38593.
Vulnerability Description
CVE-2021-38593 involves an out-of-bounds write in QOutlineMapper::convertPath, called from QRasterPaintEngine::fill and QPaintEngineEx::stroke.
Affected Systems and Versions
Qt 5.x before 5.15.6 and 6.x through 6.1.2 are impacted by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to trigger the out-of-bounds write via specific operations in Qt.
Mitigation and Prevention
Discover how to mitigate the risks associated with CVE-2021-38593.
Immediate Steps to Take
Users are advised to update Qt to versions 5.15.6 or 6.1.2 to eliminate the vulnerability.
Long-Term Security Practices
Implement security best practices such as regular software updates and code reviews to enhance system security.
Patching and Updates
Stay informed about security patches and update Qt regularly to safeguard against potential threats.