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Date: Tue, 06 Sep 2022 08:31:12 -0400
From: Michael Orlitzky <michael@...itzky.com>
To: oss-security@...ts.openwall.com
Subject: Re: sagemath denial of service with abort() in gmp:
overflow in mpz type
On Tue, 2022-09-06 at 11:50 +0000, Jeremy Stanley wrote:
> On 2022-09-06 08:47:58 +0300 (+0300), Georgi Guninski wrote:
> [...]
> > sagemath gives access to the python interpreter, so code execution
> > is trivial.
> [...]
>
> I'm not familiar with sagemath, but is it intended to protect
> against such cases? Note that even if all it does is pass
> expressions into CPython's eval(), it's pretty much impossible to
> guard against misuse without completely sandboxing the underlying
> processes. Denial of service scenarios are really the least of
> worries in that case.
That's about right. Sage does provide a web-based notebook interface,
but the bottom line is that crashing is one of the nicer things you can
ask it to do if it will execute your commands.
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