oss-sec mailing list archives

Re: sagemath denial of service with abort() in gmp: overflow in mpz type


From: Georgi Guninski <gguninski () gmail com>
Date: Thu, 13 Oct 2022 08:43:15 +0300

On Tue, Sep 6, 2022 at 7:17 PM Russ Allbery <eagle () eyrie org> wrote:


I would only call it a DoS if it crosses a privilege boundary.  A user can
always DoS themselves; that's just Ctrl-C.  :)

Observe that ubuntu issue advisory about libgmp crash
without mentioning potential exploitability.

quote:
https://ubuntu.com/security/notices/USN-5672-1

Details
12 October 2022

It was discovered that GMP did not properly manage memory
on 32-bit platforms when processing a specially crafted
input. An attacker could possibly use this issue to cause
applications using GMP to crash, resulting in a denial of
service.

References
CVE-2021-43618


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