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Date: Wed, 7 Sep 2022 08:36:17 +0300
From: Georgi Guninski <gguninski@...il.com>
To: oss-security@...ts.openwall.com
Subject: Re: sagemath denial of service with abort() in gmp:
overflow in mpz type
On Wed, Sep 7, 2022 at 4:32 AM Seth Arnold <seth.arnold@...onical.com> wrote:
>
> Could an application that handles secrets and uses GMP use prctl(2)'s
> PR_SET_DUMPABLE command to prevent dumping the core file? It'd also
> prevent using ptrace-based debugging, so it's not without costs, but if
> it handles secrets, that's probably also a good idea.
>
on ubuntu 20 a lot of stuff depends on libgmp:
$ apt-cache rdepends libgmp10 | wc -l
2442
$ apt-cache rdepends libgmp10 | grep -i crypt | wc -l
28
some examples:
gcc-9
gawk
g++-9
dnsmasq-base
cpp-9-s390x-linux-gnu
will the infidels who argue that crash in python is nothing
still will claim that gmp crash in any of the 2442 packages
is still nothing?
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