Threat database

A resource exhaustion vulnerability exists in reactphp http versions from 1.0.0 up to but not including 1.11.1. The ClientRequestStream::handleData() method appends response-header bytes to an internal buffer without size limits, allowing a remote server to cause unbounded memory growth by sending partial headers without terminating sequences. This can exhaust PHP memory and crash the event loop or worker process. The issue does not affect confidentiality or integrity. It is fixed in version 1.11.1.

react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\Http\Io\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\Http\HttpServer and response bodies for React\Http\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.