description: 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.
problem types: CWE-226: Sensitive Information Uncleared Before Release
affected:
{
product: Node.js
vendor: The Node.js Project
versions:
status: affected, version: All versions of Node.js 10 prior to 10.9.0
}