From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
To: Maxime Devos <maximedevos@telenet.be>
Cc: 47420-done@debbugs.gnu.org
Subject: bug#47420: binutils is vulnerable to CVE-2021-20197 (and various others)
Date: Tue, 22 Mar 2022 22:31:06 -0400 [thread overview]
Message-ID: <87czid1jth.fsf@gmail.com> (raw)
In-Reply-To: <d12edf9cd3c7a6779c25ccd40411c16292406e8d.camel@telenet.be> (Maxime Devos's message of "Sat, 27 Mar 2021 00:00:40 +0100")
Hi,
Maxime Devos <maximedevos@telenet.be> writes:
> On Fri, 2021-03-26 at 21:41 +0100, Léo Le Bouter via Bug reports for GNU Guix wrote:
>> CVE-2021-20197 18:15
>> There is an open race window when writing output in the following
>> utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip,
>> ranlib. When these utilities are run as a privileged user (presumably
>> as part of a script updating binaries across different users), an
>> unprivileged user can trick these utilities into getting ownership of
>> arbitrary files through a symlink.
Our current version of binutilsis now 2.37, immune to the CVE reported
here.
Thanks for the report!
Closing.
Maxim
prev parent reply other threads:[~2022-03-23 2:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-26 20:41 bug#47420: binutils is vulnerable to CVE-2021-20197 (and various others) Léo Le Bouter via Bug reports for GNU Guix
2021-03-26 21:56 ` Léo Le Bouter via Bug reports for GNU Guix
2021-03-26 23:00 ` Maxime Devos
2022-03-23 2:31 ` Maxim Cournoyer [this message]
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