CVE-2022-24900 : What You Need to Know

Piano LED Visualizer is software that enables LED lights to react as a person plays a piano connected to a computer. However, versions up to 1.3 are susceptible to a path traversal attack due to the incorrect use of the

send_file

call.

Understanding CVE-2022-24900

In this section, we will delve into the details of the CVE-2022-24900 vulnerability.

What is CVE-2022-24900?

Piano LED Visualizer versions up to 1.3 are exposed to a path traversal attack due to the insecure use of

os.path.join

with untrusted input. The vulnerability can lead to path traversal attacks by passing untrusted data to the vulnerable

send_file

function.

The Impact of CVE-2022-24900

With a CVSS base score of 9.9, this critical vulnerability can result in high confidentiality impacts. Attackers can exploit this flaw via a network without requiring privileges, potentially compromising the integrity of user data.

Technical Details of CVE-2022-24900

Let's explore the technical aspects of the CVE-2022-24900 vulnerability.

Vulnerability Description

The vulnerability arises from the incorrect handling of absolute paths by

os.path.join

in Piano LED Visualizer, allowing malicious actors to conduct path traversal attacks.

Affected Systems and Versions

Piano LED Visualizer versions up to 1.3 are affected by this vulnerability, placing users at risk of path traversal exploits.

Exploitation Mechanism

By manipulating untrusted input processed by

os.path.join

and

send_file

, attackers could bypass directory restrictions and access sensitive files on the system.

Mitigation and Prevention

Discover the steps to mitigate the CVE-2022-24900 vulnerability and enhance your system's security.

Immediate Steps to Take

Users are advised to apply the available patch from the

master

branch of the Piano LED Visualizer GitHub repository. Additionally, prevent the flow of untrusted data to the

send_file

function.

Long-Term Security Practices

To bolster long-term security, utilize

flask.safe_join

for untrusted path concatenation and replace

send_file

calls with

send_from_directory

for safer file delivery.

Patching and Updates

Stay informed about security updates and apply patches promptly to safeguard your systems against emerging threats.