LibreCad Buffer Overflow Vulnerability (CNVD-2021-92473)

A buffer error vulnerability exists in LibreCAD, an open source CAD (computer-aided design) application from the LibreCAD organization, in LibreCad libdxfrw, which stems from the failure of the product’s dwgCompressor::copyCompBytes21 function to properly handle special input data. An attacker could cause a heap buffer overflow via this vulnerability.