CyberRota Analysis
AI-GeneratedRustDesk versions prior to 1.4.7 are vulnerable to an uncontrolled speculative memory allocation issue in the BytesCodec, which allows unauthenticated attackers to exploit the payload length in the frame header to allocate excessive memory. This can lead to memory exhaustion and denial of service, impacting the availability of the affected service. Organizations using RustDesk should prioritize updating to version 1.4.7 or later 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
RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length encoded in a four-byte frame header and reserves that amount before receiving the payload. A crafted header can request up to 1,073,741,823 bytes of capacity, allowing unauthenticated attackers to use concurrent TCP connections to cause memory exhaustion and denial of service. The fix caps header-triggered speculative preallocation at 256 KiB.