CyberRota Analysis
AI-GeneratedRclone versions 1.75.0 to 1.75.1 are vulnerable due to improper handling of attacker-controlled content lengths in the S3 multipart streaming functionality, which can lead to excessive memory allocation and potential denial of service. This vulnerability can be exploited by network clients to exhaust system resources, impacting both anonymous and authenticated S3 deployments. Organizations using affected versions of rclone, especially those with public-facing S3 services, should prioritize upgrading to version 1.75.1 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.75.0 until 1.75.1, the serve S3 streamed multipart path in cmd/serve/s3/multipart.go passes attacker-controlled contentLength to multipart.NewRW().Reserve before reading request-body bytes. waitForTurn admits the current part and one oversized part when the buffer is empty despite --multipart-streaming-buffer-limit, and lib/pool allocates 1 MiB pages according to Content-Length or X-Amz-Decoded-Content-Length. A network client can retain or multiply these reservations without sending the declared body, exhausting process or host memory or permanently blocking request handlers. Anonymous S3 deployments require no credentials, while deployments using auth_key require an accepted S3 key. This issue is fixed in version 1.75.1.