As I understand everything on your pc is affected if you allow outside access via openssl on your pc. Conversely if you don't allow access to your pc via openssl, than nobody can use your ssl-connection to read your pc memory 64kb at a time and figuring out your passwords or privatekeys. This is one of the nice aspects of bitcoin is that all trafic is unencrypted anyway, so who cares who reads the public messages.
BTW you should not allow remote access to pcs with your private keys anyway, this is not the only and certainly not the last security leak that will be discovered. Come to think of it, iirc there was a similar bug in microsofts rpc-implementation that remained unfixed well into the Windows-NT's, I haven't heard of it being fixed yet. So again, be very careful when using pcs with connection to the internet, I can't wait for multisig and more cold-storage solutions.
