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From: "huzaifas at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/25487] sinl() stack corruption from crafted input
 (CVE-2020-10029)
Date: Wed, 12 Aug 2020 04:51:09 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D25487

Huzaifa Sidhpurwala <huzaifas at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |huzaifas at redhat dot com

--- Comment #8 from Huzaifa Sidhpurwala <huzaifas at redhat dot com> ---
Looking at the way crash is caused via pseudo-zero numbers and after running
the poc through gdb, it seems like on systems in which glibc is not compiled
with -fstack-protector-all, (which means the vuln function is not protected=
 by
stack-canaries), all that can be achieved is overwrite the stack and the re=
turn
address with 0's.

This can only cause a crash and jumping any other location seems very diffi=
cult
to achieve if not impossible.

--=20
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