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Node.js Vulnerability Allows Code Execution via Permissions Bypass

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🕳️ Critical Node.js Vulnerability Allows Arbitrary Code Execution. A newly discovered vulnerability in Node.js, specifically within the libuv library, enables attackers to execute arbitrary code by sending crafted messages to the signal event pipe, circumventing both module-based and process-based permissions. This exploit can be reproduced even under the strictest security policies in the latest Node.js version. The attack involves manipulating file descriptors and leveraging a segmentation fault to gain control over the execution flow. While the exact fix remains unclear, it highlights the need for improved filesystem permissions and minimizing access to sensitive components. The potential impact of this vulnerability is significant, as it undermines the experimental permission model designed to enhance security.

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