The Snare Linux Agents are not affected directly by the Ghost vulnerability, but the customer will need to patch their Operating System to a minimum of glibc-2.18.
The version 7 Snare Server/Agent Management Console is not affected, however the version 6 Snare Server/Agent Management Console will require a patch to the glibc, with expected patch release date in the first week of February 2015.
For further information see US-CERT