Impact

When authenticating, a malicious server could return a specially crafted authentication packet, causing the client to read and return up to 12 bytes of data from an uninitialized variable in stack memory.

Patches

Users of the trilogy gem should upgrade to version 2.1.1

Workarounds

This issue can be avoided by only connecting to trusted servers.

Acknowledgements

We would like to thank Sergei Volokitin for reporting this vulnerability

For more information

If you have any questions or comments about this advisory:

• Open an issue in trilogy