Date: Thu, 12 Nov 1998 11:09:07 -0100
From: =?iso-8859-1?Q?Jes=FAs?= Cea =?iso-8859-1?Q?Avi=F3n?= <[email protected]>
To: [email protected]Subject: Re: Xinetd /tmp race?
> BTW here's the patch:
[...]
> + if (!(stat(dump_file,
[...]
> dump_fd = open( dump_file, O_WRONLY + O_CREAT + O_APPEND,
Your patch is vulnerable to race attack. A script issuing "kill -HUP"
and creating links in "/tmp" will succeed in the long run.
Try open with O_CREAT|O_EXCL or lstat+open+fstat.
--
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