CyberRota Analysis
AI-GeneratedVersions 3.1.0 through 3.2.0 of the @fastify/busboy multipart form-data parser are vulnerable to a denial-of-service attack, where an unauthenticated remote attacker can exploit a crafted multipart request to stall the Node.js event loop. This can lead to significant resource exhaustion, as a single request can monopolize CPU resources, affecting the performance of other requests within the same process. Organizations using these affected versions should prioritize upgrading to 3.2.1 to mitigate this high-severity vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
@fastify/busboy is a multipart form-data parser. In versions 3.1.0 through 3.2.0, a remote unauthenticated attacker can stall the Node.js event loop by sending a multipart request whose boundary is crafted to a specific length. The vendored streaming search stores its skip table in a fixed 256 entry byte array, and a boundary of exactly 252 bytes makes the search needle 256 bytes, which truncates the default skip distance to zero and turns the search into a CPU bound loop on a small body. A single small request can keep one core busy and deny service to other requests handled by the same process. The issue is fixed in @fastify/busboy 3.2.1, which widens the skip table so the skip distance is preserved. Users should upgrade to 3.2.1.