It's about time that we look at SIPVicious again. If you're making use of the SVN version, please update to the latest svn commit which includes some fixes for bugs that were creating unnecessary traffic.
I'm currently planning on a major update of SIPVicious - email me with your suggestions and VoIP needs please ;-) Cleaner and extensible code guaranteed.
VOIPPACK gets to target IP Phones this month, with 2 major new modules that highlight what can be done to both hardphones and softphones: Ghostcall and "SIP Digest Leak".
Ghostcall might remind some people of the movie "The Omega Man" where all phones ring at the same time. Of course, the phones in the movie are most probably not VoIP phones but could very well be.
Then there's "SIP Digest Leak" that highlights a vulnerability that affects many IP Phones. This tool allows penetration testers and other security dudes to force IP Phones to reveal the digest credentials and possibly recover the password used to access a PBX or a VoIP provider.
More information about these tools was posted the EnableSecurity blog. Actual demonstration videos on the Vimeo account. And here's a clip from "The Omega Man" showing a 70's version of Ghostcall: