CyberRota Analysis
AI-GeneratedThe SFTP server in SeaweedFS versions 3.88 to 4.39 has a vulnerability that allows low-privilege authenticated users to bypass access control lists (ACLs) due to improper path permission evaluations, enabling them to access and potentially overwrite files in sibling directories. This flaw poses a significant risk to data confidentiality and integrity, particularly for organizations using SeaweedFS for multi-tenant storage solutions. Users of affected versions should prioritize upgrading to version 4.40 to mitigate this security 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
SeaweedFS is a distributed storage system for files and blobs. In versions from 3.88 through 4.39, the SFTP server evaluates configured path permissions with a literal string-prefix comparison, so a user scoped to a path is also granted the same access to any sibling path whose name merely begins with the same characters. A user granted access to /tenants/alice therefore also matches /tenants/alice-archive, /tenants/alice2, and similar siblings, because the check does not require a path-component boundary. An authenticated low-privilege SFTP user with a root home directory and narrow path permissions can thereby cross the configured ACL boundary to read another tenant's files, and to overwrite them if granted write, all through the documented SFTP service with its own valid credentials. This issue is fixed in version 4.40.