CVE-2020-11047 : Vulnerability Insights and Analysis
Learn about CVE-2020-11047, an out-of-bounds read vulnerability in FreeRDP allowing memory extraction by a malicious server. Find mitigation steps and affected versions here.
CVE-2020-11047 is an out-of-bounds read vulnerability in FreeRDP that allows a malicious server to extract client memory. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2020-11047
What is CVE-2020-11047?
In FreeRDP versions after 1.1 and before 2.0.0, an out-of-bounds read vulnerability exists in autodetect_recv_bandwidth_measure_results, enabling a malicious server to access client memory.
The Impact of CVE-2020-11047
This vulnerability allows a malicious server to extract up to 8 bytes of client memory by manipulating a message, potentially leading to sensitive data exposure.
Technical Details of CVE-2020-11047
Vulnerability Description
The vulnerability in FreeRDP allows for an out-of-bounds read, posing a risk of memory exposure to a malicious server.
Affected Systems and Versions
- Vendor: FreeRDP
- Product: FreeRDP
- Vulnerable Versions: > 1.1, < 2.0.0
Exploitation Mechanism
The exploit involves providing a short input and reading the measurement result data to extract client memory.
Mitigation and Prevention
Immediate Steps to Take
- Update FreeRDP to version 2.0.0 or later to patch the vulnerability.
- Monitor for any unusual server activity that could indicate exploitation.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Ensure timely installation of security updates and follow best practices for secure software usage.