CVE-2023-26123 : Security Advisory and Response

This CVE record was published on April 14, 2023, by Snyk for the vulnerability identified as CVE-2023-26123, with a base score of 6.1 and a base severity of MEDIUM.

Understanding CVE-2023-26123

CVE-2023-26123 is a Cross-site Scripting (XSS) vulnerability found in versions of the package raysan5/raylib before 4.5.0. This vulnerability allows attacker-controlled input to execute arbitrary JavaScript in a specific scenario.

What is CVE-2023-26123?

The vulnerability exists in the SetClipboardText API of raysan5/raylib before version 4.5.0, where the ' character is not properly escaped. This flaw enables an attacker to inject and execute malicious JavaScript code using the emscripten_run_script function. It is important to note that this vulnerability is only exploitable when compiling raylib for PLATFORM_WEB.

The Impact of CVE-2023-26123

As a Cross-site Scripting vulnerability, CVE-2023-26123 poses a moderate risk, allowing an attacker to potentially execute arbitrary JavaScript code within the context of a user's web browser. This could lead to unauthorized access to sensitive data, session hijacking, or other malicious activities.

Technical Details of CVE-2023-26123

The following technical details shed light on the vulnerability and its implications:

Vulnerability Description

The vulnerability in raysan5/raylib allows for Cross-site Scripting (XSS) attacks by failing to properly escape the ' character in the SetClipboardText function. This oversight enables malicious JavaScript execution under certain conditions.

Affected Systems and Versions

This vulnerability affects versions of raysan5/raylib prior to 4.5.0 when compiled for the PLATFORM_WEB. Other platforms such as Desktop, Mobile, or Embedded are not impacted.

Exploitation Mechanism

Exploiting CVE-2023-26123 involves providing attacker-controlled input that includes JavaScript code leveraging the vulnerability in the SetClipboardText API. This input can then trigger the execution of the injected script via the emscripten_run_script function.

Mitigation and Prevention

It is crucial to take immediate and long-term actions to mitigate the risks associated with CVE-2023-26123.

Immediate Steps to Take

Users and administrators are advised to upgrade to raylib version 4.5.0 or higher to address the vulnerability. Avoid compiling raylib for PLATFORM_WEB until the updated version is available.

Long-Term Security Practices

Developers should follow secure coding practices to validate and sanitize user input, especially when dealing with potentially dangerous characters like ' in web applications. Regular security assessments and code reviews can help identify and address such vulnerabilities proactively.

Patching and Updates

The vendor raysan5/raylib has released version 4.5.0 as a patch that addresses the Cross-site Scripting vulnerability. Organizations and developers using affected versions should prioritize updating to the latest secure release to remediate the issue.