immutable bit

John Summerfied debian at herakles.homelinux.org
Wed Nov 30 02:42:52 UTC 2005


Deron Meranda wrote:
> On 11/29/05, James Wilkinson <fedora at westexe.demon.co.uk> wrote:
> 
>>preeti malakar wrote:
>>
>>>Why is the immutable bit of all system binaries viz files in /sbin, /bin, /usr
>>>not set, so that none can change or delete them?
>>
>>As Paul said, that would stop yum and rpm from upgrading those programs
>>(say if the immutable binary has a security bug).
> 
> 
> Also that would cause the prelink cronjob to fail...since it does
> intentionally modify files.
> 
> There's nothing of course to keep you from setting the immutable
> bit.  And if you're building a super hardened system perhaps you

If you're that paranoid, a ro filesystem's hard to beat.

> 


-- 

Cheers
John

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