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Date: Thu, 8 Jun 2017 15:54:27 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com, Glenn Randers-Pehrson <glennrp@...il.com>
Subject: Re: Is not memory allocation failure a bug?
On 2017-06-08 3:04 PM, Glenn Randers-Pehrson wrote:
> I just checked a fix for one of those into Firefox yesterday. It wasn't
> considered a serious problem because the malloc would eventually
> fail safely, but it's better to predict the problem ahead of time and not
> even try to malloc all available memory.
>
> See https://bugzilla.mozilla.org/show_bug.cgi?id=1368407
> in which a tiny PNG file tries to claim Gigabytes of memory.
Ok so I tested it, no crash/huge memory thing, but the CPU got maxed and
even when I closed the tab for the image Firefox kept eating CPU, I
wasn't able to close Firefox, had to use the kill command (which worked
fine) so this clearly falls into the DoS camp and may need a CVE, has
Mozilla commented on why they have elected to NOT give it a CVE?
--
Kurt Seifried -- Red Hat -- Product Security -- Cloud
PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
Red Hat Product Security contact: secalert@...hat.com
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