CVE-2020-11045 : What You Need to Know

CVE-2020-11045 relates to an out-of-bounds read vulnerability in FreeRDP that could allow unauthorized access to client memory. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-11045

What is CVE-2020-11045?

In FreeRDP versions after 1.0 and before 2.0.0, an out-of-bound read vulnerability exists in the update_read_bitmap_data function. This flaw enables the reading of client memory into an image buffer, potentially leading to unauthorized access.

The Impact of CVE-2020-11045

This vulnerability could result in the exposure of sensitive client memory data, which may be displayed on the screen as color artifacts.

Technical Details of CVE-2020-11045

Vulnerability Description

The vulnerability in FreeRDP allows an attacker to read client memory beyond the intended boundaries, potentially leading to information disclosure.

Affected Systems and Versions

Vendor: FreeRDP
Product: FreeRDP
Affected Versions: > 1.0, < 2.0.0

Exploitation Mechanism

The vulnerability can be exploited by manipulating specific data to trigger the out-of-bounds read, allowing an attacker to access sensitive information.

Mitigation and Prevention

Immediate Steps to Take

Update FreeRDP to a patched version that addresses the out-of-bounds read vulnerability.
Monitor for any unusual activities that may indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Ensure that all systems running FreeRDP are updated to versions that have addressed the CVE-2020-11045 vulnerability.