Binary package hint: egroupware
I know it's already in these two bugs, but waiting for upstream changes is not necessary since two very simple workarounds that could be back-ported to many older versions exist.
From bugs:
https://bugs.launchpad.net/ubuntu/+source/egroupware/+bug/594848
https://bugs.launchpad.net/ubuntu/+source/egroupware/+bug/429254
Change the default /etc/apache2/conf.d/egroupware to have the following values:
php_admin_value request_order GPCS
php_admin_value open_basedir /usr/share/egroupware:/var/lib/egroupware:/tmp:/usr/share/php:/usr/share/doc
OR (and this list may be incomplete)
php_admin_value request_order GPCS
php_admin_value open_basedir /usr/share/egroupware:/var/lib/egroupware:/tmp:/usr/share/php:usr/share/doc/egroupware-addressbook:/usr/share/doc/egroupware-bookmarks:/usr/share/doc/egroupware-calendar:/usr/share/doc/egroupware-core:/usr/share/doc/egroupware-developer-tools:/usr/share/doc/egroupware-egw-pear:/usr/share/doc/egroupware-emailadmin:/usr/share/doc/egroupware-etemplate:/usr/share/doc/egroupware-felamimail:/usr/share/doc/egroupware-filemanager:/usr/share/doc/egroupware-infolog:/usr/share/doc/egroupware-manual:/usr/share/doc/egroupware-news-admin:/usr/share/doc/egroupware-notifications:/usr/share/doc/egroupware-phpbrain:/usr/share/doc/egroupware-phpsysinfo:/usr/share/doc/egroupware-polls:/usr/share/doc/egroupware-projectmanager:/usr/share/doc/egroupware-registration:/usr/share/doc/egroupware-resources:/usr/share/doc/egroupware-sambaadmin:/usr/share/doc/egroupware-sitemgr:/usr/share/doc/egroupware-timesheet:/usr/share/doc/egroupware-tracker:/usr/share/doc/egroupware-wiki
