CVE-2020-15479 : Exploit Details and Defense Strategies
Discover the critical CVE-2020-15479 affecting PassMark BurnInTest, OSForensics, and PerformanceTest, leading to buffer overflow, code execution, and privilege escalation. Learn mitigation steps.
An issue was discovered in PassMark BurnInTest through 9.1, OSForensics through 7.1, and PerformanceTest through 10, leading to a buffer overflow vulnerability that could result in arbitrary code execution and privilege escalation.
Understanding CVE-2020-15479
This CVE identifies a critical security flaw in certain PassMark software versions that could allow attackers to execute malicious code and elevate their privileges.
What is CVE-2020-15479?
The vulnerability arises from a driver's IOCTL request handler copying input buffer data onto the stack without proper size verification, potentially leading to a buffer overflow. The affected components are DirectIo32.sys and DirectIo64.sys.
The Impact of CVE-2020-15479
The exploitation of this vulnerability could enable attackers to execute arbitrary Ring-0 code and escalate their privileges on the compromised system, posing a significant security risk.
Technical Details of CVE-2020-15479
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The driver's IOCTL request handler fails to validate the size of the input buffer before copying it onto the stack, creating a buffer overflow opportunity.
Affected Systems and Versions
- PassMark BurnInTest through version 9.1
- OSForensics through version 7.1
- PerformanceTest through version 10
Exploitation Mechanism
By sending specially crafted input data to the affected driver, an attacker can trigger a buffer overflow, potentially leading to the execution of malicious code and privilege escalation.
Mitigation and Prevention
Protecting systems from CVE-2020-15479 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches or updates provided by PassMark for the affected software versions.
- Monitor for any signs of unauthorized system access or unusual activities.
Long-Term Security Practices
- Regularly update and patch all software and drivers to address known vulnerabilities.
- Implement least privilege access controls to limit the impact of potential security breaches.
Patching and Updates
- Stay informed about security advisories and updates from PassMark to promptly address any new vulnerabilities and protect systems from exploitation.