oss-sec mailing list archives

Re: Re: Handful of libass issues


From: Brandon Perry <bperry.volatile () gmail com>
Date: Thu, 27 Oct 2016 08:24:24 -0500


On Oct 27, 2016, at 3:39 AM, Salvatore Bonaccorso <carnil () debian org> wrote:

Hi,

On Tue, Oct 04, 2016 at 10:23:22PM -0400, cve-assign () mitre org wrote:
The third is a huge memory allocation leading to a crash that wasn't
fixed because a good solution is unavailable at the moment.

Use CVE-2016-7971.

It looks from the discussion in
https://github.com/libass/libass/pull/240 that this issue is disputed
to be actually in libass.


For context, while the input caused a crash with AFL (not fuzzing with ASAN) and it crashes with ASAN, I was unable to 
reproduce the crash with libass externally. I was only able to take up a hug amount of memory and take a long time to 
finish parsing the input.

I asked if they dev wanted to reject the CVE but got no strong response either way, so I decided to not pursue it.

Should the CVE assignment be revisited, possibly rejected, according
the upstream discussion?

Regards,
Salvatore

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