TemporaryPermissions

Sets the permissions on temporary files created by eZ publish

TemporaryPermissions= permission_setting

The permission setting should be specified using the UNIX file permission schema.
Note that:

It is important that the webserver has sufficient permissions to both write and remove files.
Settting the permissions to 0777 (read and write to all) is a potential security risk.

The preferred setting is 0770 (full read and write to user and group). This requires apache to have the correct user/group access.