GNU bug report logs - #47422
tar is vulnerable to CVE-2021-20193

Please note: This is a static page, with minimal formatting, updated once a day.
Click here to see this page with the latest information and nicer formatting.

Package: guix; Reported by: Léo Le Bouter <lle-bout@HIDDEN>; Keywords: security; dated Fri, 26 Mar 2021 21:32:02 UTC; Maintainer for guix is bug-guix@HIDDEN.
Added tag(s) security. Request was from Léo Le Bouter <lle-bout@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at submit <at> debbugs.gnu.org:


Received: (at submit) by debbugs.gnu.org; 26 Mar 2021 21:31:08 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 26 17:31:08 2021
Received: from localhost ([127.0.0.1]:42691 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1lPu2u-0005fI-AW
	for submit <at> debbugs.gnu.org; Fri, 26 Mar 2021 17:31:08 -0400
Received: from lists.gnu.org ([209.51.188.17]:38598)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <lle-bout@HIDDEN>) id 1lPu2t-0005fB-6x
 for submit <at> debbugs.gnu.org; Fri, 26 Mar 2021 17:31:07 -0400
Received: from eggs.gnu.org ([2001:470:142:3::10]:51202)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <lle-bout@HIDDEN>)
 id 1lPu2s-0001T0-W9
 for bug-guix@HIDDEN; Fri, 26 Mar 2021 17:31:07 -0400
Received: from mail.zaclys.net ([178.33.93.72]:40713)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <lle-bout@HIDDEN>)
 id 1lPu2o-0005MR-5A
 for bug-guix@HIDDEN; Fri, 26 Mar 2021 17:31:06 -0400
Received: from [192.168.0.44] (82-64-145-38.subs.proxad.net [82.64.145.38])
 (authenticated bits=0)
 by mail.zaclys.net (8.14.7/8.14.7) with ESMTP id 12QLUvgM036157
 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO)
 for <bug-guix@HIDDEN>; Fri, 26 Mar 2021 22:30:57 +0100
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.zaclys.net 12QLUvgM036157
Authentication-Results: mail.zaclys.net;
 dmarc=fail (p=reject dis=none) header.from=zaclys.net
Authentication-Results: mail.zaclys.net;
 spf=fail smtp.mailfrom=lle-bout@HIDDEN
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zaclys.net;
 s=default; t=1616794257;
 bh=bXqhcighirSjeOlxOe3oq71ARYgbsiLR6u884l3r2kE=;
 h=Subject:From:To:Date:From;
 b=X5SsX2wdoMhW3MK75+LVMqXrUjuIYTATcBC4JYSrJS4I0Yjq5ZEpEvjEZs80PDRFu
 7YmQwi6rAyfzzWbo+ObDMwN6MQio5RYxKbxahufMeGARVyhYMWRLPRyUFKtgrdQFYr
 ztUgfssYBqpMW5mH3jYjxZSAbzdWBGUw0wqDFLUQ=
Message-ID: <520e2097011aae1bfd9c20278e27e25813517b42.camel@HIDDEN>
Subject: tar is vulnerable to CVE-2021-20193
From: =?ISO-8859-1?Q?L=E9o?= Le Bouter <lle-bout@HIDDEN>
To: bug-guix@HIDDEN
Date: Fri, 26 Mar 2021 22:30:57 +0100
Content-Type: multipart/signed; micalg="pgp-sha512";
 protocol="application/pgp-signature"; boundary="=-vcrxFeFFAUdkPoLS4Qjo"
User-Agent: Evolution 3.34.2 
MIME-Version: 1.0
Received-SPF: pass client-ip=178.33.93.72; envelope-from=lle-bout@HIDDEN;
 helo=mail.zaclys.net
X-Spam_score_int: -20
X-Spam_score: -2.1
X-Spam_bar: --
X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,
 DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001,
 SPF_PASS=-0.001 autolearn=ham autolearn_force=no
X-Spam_action: no action
X-Spam-Score: -1.3 (-)
X-Debbugs-Envelope-To: submit
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -2.3 (--)


--=-vcrxFeFFAUdkPoLS4Qjo
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

CVE-2021-20193	18:15
A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw
allows an attacker who can submit a crafted input file to tar to cause
uncontrolled consumption of memory. The highest threat from this
vulnerability is to system availability.

Patch available here:=20
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=3Dd9d4435692150fa8ff68=
e1b1a473d187cc3fd777

Unreleased for now.

We can probably apply it in core-updates now, we should fix it in
master also, since grafts don't apply to GNU Guix builds is that OK?

GNU Guix packages don't unpack arbitrary tarballs since we hardcode
hashes for verification, but still.

--=-vcrxFeFFAUdkPoLS4Qjo
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part
Content-Transfer-Encoding: 7bit

-----BEGIN PGP SIGNATURE-----
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=e+Y2
-----END PGP SIGNATURE-----

--=-vcrxFeFFAUdkPoLS4Qjo--





Acknowledgement sent to Léo Le Bouter <lle-bout@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#47422; Package guix. Full text available.
Please note: This is a static page, with minimal formatting, updated once a day.
Click here to see this page with the latest information and nicer formatting.
Last modified: Fri, 26 Mar 2021 21:45:02 UTC

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.