The development and security teams here at Symantec have been working on testing this issue, and so far, while we do use a vulnerable version of glibc, we do not appear to be vulnerable to remote unauthenticated attackers. Until their official response, that is the best information I can provide.
When an official statement comes out, I will try to post it here. I would also like to note that the version of glibc should be updated in our next release, 3.3.2 mp8.