Re: deleted perl hacks in /tmp

[Alex <mysqlstudent@xxxxxxxxx>]

Hi,

Some time ago Chris was trying to track down some cracker using perl
to breach his system:

On Fri, Apr 16, 2010 at 5:27 PM, Chris <chris@xxxxxxxxxx> wrote:
>> Is changing the filesystem type an option?  You could temporarily
>> create a new non-extn filesystem on a free partition and mount it on
>> /tmp.
>> In that case, you could  set the undeletable attribute on /tmp
>> ("chattr +U /tmp").  It will be inherited by any file created there.
>> Problem is that extn doesn't honour the attribute, though you could
>> patch it if you prefer (cf. http://lwn.net/Articles/211193/).

How did it work out? Were you able to mount undeletable? Did you find
out which files they were? Do you now have plans to rebuild the
system?

Best,
Alex
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