Users able to execute windows .exe though execute bit not set

Richard Sharpe rsharpe at
Tue Apr 1 18:58:21 GMT 2003

On Tue, 1 Apr 2003, Jim McDonough wrote:

> >Hmmm, I did some testing a week or so ago, and found that removing the
> >execute permission from ACLs on the file (esp inherited ones) prevents
> >Win2K from executing the file, although it does open the file for read
> >first.
> Doesn't happen for me.  It lets me execute a file for which I only have
> read access...

Right, but I was testing Win2K against NT. I know that we will fail this 
test, as discussed on IRC because the POSIX open call does not allow you 
to specify O_EXEC ... so I will need to do other checks here. However, 
since our NFS code needs to check for X access, I can probably piggy back 
on this with an IOCTL. UGLY.

We should probably have a torture test for this.

Richard Sharpe, rsharpe[at], rsharpe[at], 

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