CVE-2020-11040 : What You Need to Know

CVE-2020-11040 pertains to an out-of-bounds read vulnerability in FreeRDP versions less than or equal to 2.0.0, potentially leading to memory data exposure. Learn about the impact, technical details, and mitigation steps below.

Understanding CVE-2020-11040

In FreeRDP less than or equal to 2.0.0, an out-of-bound data read from memory occurs in clear_decompress_subcode_rlex, displaying on-screen as color. The issue has been addressed in version 2.1.0.

What is CVE-2020-11040?

This CVE involves an out-of-bounds read vulnerability in FreeRDP versions <= 2.0.0, allowing potential memory data exposure.

The Impact of CVE-2020-11040

The vulnerability's CVSS v3.1 base score is 2.2, indicating a low severity issue with a network attack vector and high complexity. It may lead to an out-of-bounds read, impacting confidentiality, integrity, and availability to a low extent.

Technical Details of CVE-2020-11040

The following technical aspects are associated with CVE-2020-11040:

Vulnerability Description

The vulnerability involves an out-of-bounds read in FreeRDP versions <= 2.0.0, specifically in clear_decompress_subcode_rlex.

Affected Systems and Versions

Vendor: FreeRDP
Product: FreeRDP
Affected Versions: <= 2.0.0

Exploitation Mechanism

The issue can be exploited by triggering the out-of-bounds read in the mentioned function, potentially leading to memory data exposure.

Mitigation and Prevention

To address CVE-2020-11040, consider the following mitigation strategies:

Immediate Steps to Take

Update FreeRDP to version 2.1.0 or later to mitigate the vulnerability.
Monitor vendor advisories and apply patches promptly.

Long-Term Security Practices

Regularly update software and systems to the latest versions.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories from FreeRDP and apply patches as soon as they are available.