CyberRota Analysis
AI-GeneratedWebSocket servers and clients utilizing the `permessage-deflate` extension are vulnerable to accepting oversized messages due to improper validation of message size, which is checked against compressed data rather than decompressed data. This flaw can lead to resource exhaustion and potential denial-of-service conditions. All users of affected libraries should prioritize upgrading to version 0.8.1, where this issue has been patched.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. ### Patches The issue has been patched in version 0.8.1, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.