I'm no expert with PHP but our team has locked down PHP pretty well and we run the cgi edition. Have disabled quite a number of things that can be exploited
Anyway, thanks for the article. We'll be investigating this and updating to 4.3.10 soon after
Regarding phpBB. Although you can do phpBB installations through HSphere, we do not officially support that and anyone who uses phpBB should be downloading it directly from their site and be aware of it. But anyway, I will be making an announcement about it
PSOFT has released patch 6 which upgrades phpBB to the latest but we aren't going to be applying that at least in the next 2 weeks (till its properly tested)