Sandbox Breakout / Arbitrary Code Execution in lighter-vm
Summary
GHSA-c3hq-7mxh-mqxf: Sandbox Breakout / Arbitrary Code Execution in lighter-vm. Affects lighter-vm versions >= 0.0.0. No fix is published. How to fix ↓
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Background
The lighter-vm package is an npm package used for sandboxing JavaScript code execution. It provides a secure environment for running untrusted code by restricting access to certain resources and APIs. However, all versions of lighter-vm are vulnerable to a Sandbox Escape vulnerability, which can lead to Remote Code Execution. This vulnerability allows attackers to bypass the sandbox restrictions and execute arbitrary code in the system.
Vulnerability Detail
The vulnerability in lighter-vm arises from the package's failure to properly restrict access to the main context through this.constructor.constructor. By exploiting this flaw, an attacker can execute arbitrary code within the system. For example, evaluating the payload this.constructor.constructor('return process.env')() would print the contents of the process.env object, potentially exposing sensitive information. This vulnerability poses a significant risk as it allows an attacker to execute malicious code and potentially gain unauthorized access to the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As there is no fix available, a possible workaround is to implement additional security measures in the application that utilizes lighter-vm. This may include implementing strict input validation, sanitization of user-supplied code, and enforcing strong access controls to limit the impact of any potential code execution.
Conclusion
The lighter-vm package is vulnerable to a Sandbox Escape vulnerability, which can lead to Remote Code Execution. Currently, there is no fix available, and it is recommended to consider using an alternative package until a fix is made available. Implementing additional security measures in the application can help mitigate the risk of this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
lighter-vm is an npm package used for sandboxing JavaScript code execution. It provides a secure environment for running untrusted code by restricting access to certain resources and APIs.
A Sandbox Escape vulnerability allows an attacker to break out of the restricted environment provided by a sandbox and execute arbitrary code with elevated privileges.
The vulnerability in lighter-vm can lead to Remote Code Execution, allowing an attacker to execute arbitrary code within the system. This can result in unauthorized access, data breaches, and potential compromise of the entire system.
Currently, there is no fix available for this vulnerability in lighter-vm. It is recommended to consider using an alternative package until a fix is made available.
To mitigate the risk of this vulnerability, it is recommended to implement additional security measures in the application that utilizes lighter-vm. This may include strict input validation, sanitization of user-supplied code, and enforcing strong access controls.
