CVE-2020-4030 : What You Need to Know

CVE-2020-4030 is an out-of-bounds read vulnerability in

TrioParse

in FreeRDP before version 2.1.2. This CVE was published on June 22, 2020, and assigned by GitHub_M.

Understanding CVE-2020-4030

In FreeRDP before version 2.1.2, an out-of-bounds read vulnerability exists in TrioParse, potentially allowing attackers to bypass string length checks due to an integer overflow.

What is CVE-2020-4030?

This CVE refers to a security flaw in FreeRDP that could be exploited to trigger an out-of-bounds read due to logging bypassing string length checks.

The Impact of CVE-2020-4030

The impact of this vulnerability is rated as LOW severity with a CVSS base score of 3.5. It requires a low level of privileges and has a high attack complexity.

Technical Details of CVE-2020-4030

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability involves an out-of-bounds read in TrioParse in FreeRDP before version 2.1.2, allowing potential bypass of string length checks.

Affected Systems and Versions

Vendor: FreeRDP
Affected Product: FreeRDP
Vulnerable Versions: < 2.1.2

Exploitation Mechanism

The vulnerability can be exploited by manipulating logging to bypass string length checks, leading to an out-of-bounds read.

Mitigation and Prevention

To address CVE-2020-4030, consider the following mitigation strategies:

Immediate Steps to Take

Update FreeRDP to version 2.1.2 or later to eliminate the vulnerability.
Monitor vendor advisories and apply patches promptly.

Long-Term Security Practices

Regularly update software and systems to prevent known vulnerabilities.
Implement secure coding practices to avoid similar issues in the future.

Patching and Updates

Ensure timely patching of software and systems to address security vulnerabilities like CVE-2020-4030.