CVE-2018-7166

CVE-2018-7166

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.

EPSS 3.3%

Published

2018-08-21T13:00:00.000Z

Updated

2026-10-08T21:14:05.567Z

Stack: node

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