CVE-2020-11086 Explained : Impact and Mitigation

CVE-2020-11086, assigned by GitHub_M, pertains to an out-of-bounds read vulnerability in FreeRDP's

ntlm_read_ntlm_v2_response

function.

Understanding CVE-2020-11086

What is CVE-2020-11086?

In FreeRDP version 2.0.0 and below, a flaw in the

ntlm_read_ntlm_v2_client_challenge

function allows reading up to 28 bytes out-of-bounds, potentially leading to information exposure.

The Impact of CVE-2020-11086

This vulnerability could be exploited by an attacker to read sensitive data from the affected system's memory, posing a risk to confidentiality.

Technical Details of CVE-2020-11086

Vulnerability Description

The issue in FreeRDP versions <= 2.0.0 enables an out-of-bounds read operation, which has been addressed in version 2.1.0.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited remotely with a low level of privileges and no user interaction required, making it a potential target for network-based attacks.

Mitigation and Prevention

Immediate Steps to Take

Update FreeRDP to version 2.1.0 or later to mitigate the vulnerability.
Monitor vendor advisories and security mailing lists for any patches or updates.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network segmentation and access controls to limit exposure to potential threats.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches provided by FreeRDP to address known vulnerabilities.