lkml.org 
[lkml]   [2004]   [Jun]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: WINE + NX (No eXecute) support for x86, 2.6.7-rc2-bk2
Date
On Tuesday 08 June 2004 16:50, Robert White wrote:
> I would think that having an easy call to disable the NX modification would
> be both safe and effective. That is, adding a syscall (or whatever) that
> would let you mark your heap and/or stack executable while leaving the new
> default as NX, is "just as safe" as flagging the executable in the first
> place.

ahhhh no.

The first attack against a vulerable server would be to load a string
on the stack that would:
1. have address of the syscall to turn off NX, then return to the stack.
2. have normal worm/virus code following.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:03    [W:0.064 / U:0.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site