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Re: /proc filesystem allows bypassing directory permissions on Linux

From:	psz maths usyd edu au
To:	marco osp nl
Cc:	bugtraq securityfocus com, Casper Dik sun com, dan lightwave net ru, matt bergin hotmail com, pavel ucw cz
Subject:	Re: /proc filesystem allows bypassing directory permissions on Linux
Date:	Tue - Oct 27, 2009 05:01 AM

Marco Verschuur <marco@osp.nl> wrote:

> And due to the actual file permissions the read-only fd can easily  
> changed to read-write.

How would you do that? Cannot use fcntl() as that would not let you.

Cheers, Paul

Paul Szabo   psz@maths.usyd.edu.au   http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics   University of Sydney    Australia

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