CVE-2018-19872 : Vulnerability Insights and Analysis
Learn about CVE-2018-19872, a vulnerability in Qt 5.11 where a misformatted PPM image triggers a division by zero, leading to a crash. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A problem in Qt version 5.11 was identified where a misformatted PPM image triggers a division by zero, leading to a crash in the qppmhandler.cpp file.
Understanding CVE-2018-19872
An issue was discovered in Qt 5.11 where a malformed PPM image causes a division by zero and a crash in qppmhandler.cpp.
What is CVE-2018-19872?
This CVE identifies a vulnerability in Qt version 5.11 that allows a misformatted PPM image to trigger a division by zero, resulting in a crash in the qppmhandler.cpp file.
The Impact of CVE-2018-19872
The vulnerability can lead to a denial of service (DoS) condition due to a crash in the affected Qt software.
Technical Details of CVE-2018-19872
Vulnerability Description
A misformatted PPM image in Qt 5.11 triggers a division by zero, causing a crash in the qppmhandler.cpp file.
Affected Systems and Versions
- Product: Qt
- Vendor: Qt
- Version: 5.11
Exploitation Mechanism
The vulnerability is exploited by providing a specially crafted misformatted PPM image to the affected software, triggering the division by zero and subsequent crash.
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security updates provided by Qt to address the vulnerability.
- Avoid opening untrusted or unknown PPM image files.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement proper input validation mechanisms to handle malformed image files securely.
Patching and Updates
Ensure that the Qt software is updated to version 5.11.3 or later to mitigate the vulnerability.