[Bug 573591] [NEW] Uploads greater than 64 kilobytes corrupted under PHP 5.3.2

[Ian Justman]

Public bug reported:

Binary package hint: php5

I run a Mediawiki server which I just recently upgraded to Lucid Lynx.
My wiki's users originally reported issues with uploading PNGs, but
further testing on the actual server along with a VM show that it is not
MediaWiki itself that is doing this but PHP.  Using a very simple HTML
and PHP script setup, I uploaded several files, mainly images but I also
uploaded .ZIP files as well.  Under PHP 5.3.2 even using either my full
live system or a very basic setup*, all files greater than 64 kilobytes
were corrupted at about the 64 kilobyte mark.  The amount of corrupted
data varies but it doesn't appear to be more than about 32 kilobytes.

However, in stark contrast, PHP 5.2.10 in Karmic Koala running in
another VM works just fine using the exact same "very basic setup".

Both of these setups are running x86-64 installs.  I have yet to try
x86-32 installs.

This might be an upstream issue in PHP 5.3.2 since they ditch mime_magic
in favor of fileinfo, so I am going to test this in other distributions,
notably Debian.

-----

*The "very basic setup" requires the following packages and their
dependencies be present per my own production setup:

php5-cgi
apache2-mpm-worker
libapache2-mod-fcgid

Note that in Lucid Lynx, I do NOT include any other PHP modules,
including Suhosin.

Optionally, I add apache2-custom-suexec (which is required on my
production setup because I do not use /var/www but /home/wwwhome).

The changes to the default setup involve adding a few lines to
/etc/apache2/sites-available/default, a few files and a directory in
/var/www, along with chowning -R ianj:ianj the entire /var/www
hierarchy, then enabling suexec.  The configs and /var/www hierarchy set
up appropriately are in the attached tarball and is unpacked in /.  It
assumes the username "ianj" who is in group "ianj".  Adjust system or
configs to suit.

** Affects: php5 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Uploads greater than 64 kilobytes corrupted under PHP 5.3.2
https://bugs.launchpad.net/bugs/573591
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to php5 in ubuntu.