Re: /proc filesystem allows bypassing directory permissions on L
Dear Casper and Dan,
> If you can control<pid>, then clearly you have access the file anyway
> simply by controlling it using a debugger.
Sorry, but no. The "attacker" has the file opened O_RDONLY, and cannot
"upgrade" that to O_RDWR.
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
討論串 (同標題文章)
完整討論串 (本文為第 29 之 44 篇)：