Command Injection in Snort 3 Control Channel

Executive Summary

This vulnerability is in Open Source Snort 3's control channel socket implementation. It allows an authenticated local attacker with low privileges to execute arbitrary commands as the Snort 3 process user due to a lack of authentication when connecting to the control channel socket.

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Detection Guidance

Check if Snort 3 is running and identify the control channel socket location. Use commands like 'ps aux | grep snort' to verify the process and 'ls -la /var/run/snort*' to locate socket files. Monitor for unauthorized connections to these sockets.

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Impact Analysis

An attacker could exploit this to run arbitrary commands, read, and write to Snort 3 process memory. This could lead to unauthorized access, data theft, or system compromise on the affected machine.

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Mitigation Strategies

Upgrade to Snort 3 version 3.12.4.0 or later immediately. Disable the control channel socket if not required. Restrict local user access to the socket and monitor for suspicious activity.

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