CVE-2020-11521 Explained : Impact and Mitigation

FreeRDP version > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write vulnerability.

Understanding CVE-2020-11521

This CVE involves an Out-of-bounds Write vulnerability in FreeRDP.

What is CVE-2020-11521?

CVE-2020-11521 is a security vulnerability found in FreeRDP versions > 1.0 through 2.0.0-rc4, specifically in the libfreerdp/codec/planar.c file.

The Impact of CVE-2020-11521

This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by triggering an out-of-bounds write.

Technical Details of CVE-2020-11521

FreeRDP version > 1.0 through 2.0.0-rc4 is affected by this vulnerability.

Vulnerability Description

The issue lies in the libfreerdp/codec/planar.c file, where an out-of-bounds write can occur.

Affected Systems and Versions

FreeRDP versions > 1.0 through 2.0.0-rc4

Exploitation Mechanism

Attackers can exploit this vulnerability to execute arbitrary code or trigger a denial of service by manipulating certain data.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Apply the latest security updates provided by FreeRDP.
Monitor for any unusual activities on the network that could indicate an exploit attempt.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and patches released by FreeRDP.
Ensure that all systems running FreeRDP are updated with the latest security fixes.