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Date: Fri, 29 Jun 2012 10:12:29 +0530
From: Dhiru Kholia <dhiru.kholia@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: office2john.c uses mktemp()
On Fri, Jun 29, 2012 at 2:17 AM, Solar Designer <solar@...nwall.com> wrote:
> Dhiru, all -
>
> I've just noticed this:
>
> dirname = mktemp(template);
> if (!dirname) {
> perror("mkdtemp");
> exit(-1);
> }
> outfile = gsf_outfile_stdio_new(dirname, &err);
> if (outfile == NULL) {
>
> I hope gsf_outfile_stdio_new() will return NULL if the directory name is
> already taken, so this is not a security hole then (otherwise it is!),
> but even if so this has two issues:
I will try this soon and see what happens.
> 1. mktemp() is deprecated, to the point that some systems will give
> scary warnings and some might not even provide the function.
Will replace it with mkstemp.
> 2. In the perror() call, it says "mkdtemp", whereas the function that
> was actually called was mktemp().
Typo. Message inside perror should be mktemp. gsf_outfile_stdio_new
itself creates the folder IIRC.
> Do you see an easy fix for this? If so, please propose one in here
> first, don't commit any fix right away.
Replace mktemp by mkstemp and ensure that gsf_outfile_stdio_new works
correctly.
I will do some tests and report back.
--
Cheers,
Dhiru
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