Categories
CVE-2025-52570

Letmein connection limiter allows an arbitrary amount of simultaneous connections

Summary

Letmein connection limiter allows an arbitrary amount of simultaneous connections

Original description

The description as published by the source.

Letmein is an authenticating port knocker. Prior to version 10.2.1, The connection limiter is implemented incorrectly. It allows an arbitrary amount of simultaneously incoming connections (TCP, UDP and Unix socket) for the services letmeind and letmeinfwd. Therefore, the command line option num-connections is not effective and does not limit the number of simultaneously incoming connections. This issue has been patched in version 10.2.1.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

References

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