From mboxrd@z Thu Jan 1 00:00:00 1970 From: Didier Link Subject: Re: ghostscript vulnerabilities Date: Sun, 6 Nov 2016 19:34:55 +0100 Message-ID: <85f3d7fe-56e2-be63-3595-929e928220ed@famille-link.fr> References: <87insx37ss.fsf@gmail.com> <87mvi9l17x.fsf@gnu.org> <87a8e6jc6q.fsf@netris.org> <87twcc5m90.fsf@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="B1LSHF5sRuuNr3PxPvrDngDGVva1WDGrC" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:59517) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c3SHk-000680-7j for guix-devel@gnu.org; Sun, 06 Nov 2016 13:35:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c3SHj-0000zL-1u for guix-devel@gnu.org; Sun, 06 Nov 2016 13:35:16 -0500 In-Reply-To: <87twcc5m90.fsf@gmail.com> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: bug-ghostscript@gnu.org Cc: guix-devel@gnu.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --B1LSHF5sRuuNr3PxPvrDngDGVva1WDGrC Content-Type: multipart/mixed; boundary="ii2Q4fcS4QtmBp3ScxGWcoJIS1wnaeQtk" From: Didier Link To: bug-ghostscript@gnu.org Cc: Alex Vong , Mark H Weaver , =?UTF-8?Q?Ludovic_Court=c3=a8s?= , guix-devel@gnu.org Message-ID: <85f3d7fe-56e2-be63-3595-929e928220ed@famille-link.fr> Subject: Re: ghostscript vulnerabilities References: <87insx37ss.fsf@gmail.com> <87mvi9l17x.fsf@gnu.org> <87a8e6jc6q.fsf@netris.org> <87twcc5m90.fsf@gmail.com> In-Reply-To: <87twcc5m90.fsf@gmail.com> --ii2Q4fcS4QtmBp3ScxGWcoJIS1wnaeQtk Content-Type: multipart/alternative; boundary="------------B9CE162A6AB66FFCA20AA20D" This is a multi-part message in MIME format. --------------B9CE162A6AB66FFCA20AA20D Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Le 16/10/2016 =C3=A0 17:47, Alex Vong a =C3=A9crit : > Hello, > > I notice the patch for CVE-2016-7977[0] handles the problem differently= > than GNU Ghostscript[1] does. Maybe you can take a look at it. > > [0]: http://git.ghostscript.com/?p=3Dghostpdl.git;a=3Dcommitdiff;h=3D8a= bd22010eb4db0fb1b10e430d5f5d83e015ef70 > [1]: http://git.savannah.gnu.org/cgit/ghostscript.git/tree/psi/zfile.c > > Thanks, > Alex Hello, I've just released a gnu-ghostscript point release with the CVE patches adapted by Mark (really thanks !!!). For the CVE-2016-7977 I've see that the file concerned was modified in later release of gpl-ghostscript, I will see in later release of gnu version ;) Best regards Didier > > Didier Link writes: > >> Hello all >> >> I will review the Mark's patches and apply them for a security release= next week. >> >> Thanks for your help ! >> >> Best regards >> >> Didier >> >> Le 15/10/2016 =C3=A0 09:36, Mark H Weaver a =C3=A9crit : >> >> ludo@gnu.org (Ludovic Court=C3=A8s) writes: >> >> Hello Didier and all, >> >> We are wondering about the applicability to GNU Ghostscript of the >> recent vulnerabilities discovered in AGPL Ghostscript: >> >> Alex Vong skribis: >> >> Salvatore Bonaccorso writes: >> >> ---------------------------------------------------------------------= ---- >> =20 >> Debian Security Advisory DSA-3691-1 security@debian.= org >> https://www.debian.org/security/ Salvatore Bonacco= rso >> October 12, 2016 https://www.debian.org/security/= faq >> ----------------------------------------------------------------------= --- >> >> Package : ghostscript >> CVE ID : CVE-2013-5653 CVE-2016-7976 CVE-2016-7977 CVE-2016-79= 78=20 >> CVE-2016-7979 CVE-2016-8602 >> Debian Bug : 839118 839260 839841 839845 839846 840451 >> >> Several vulnerabilities were discovered in Ghostscript, the GPL >> PostScript/PDF interpreter, which may lead to the execution of arbitra= ry >> code or information disclosure if a specially crafted Postscript file = is >> processed. >> >> [...] >> >> I've checked just now. GNU Ghostscript is also affected at least by >> CVE-2016-8602. Looking at the patch in this bug report[0] and the >> source[1], one can see that the vulnerable lines are present in GNU >> Ghostscript. What should we do now? >> >> [0]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D840451 >> [1]: http://git.savannah.gnu.org/cgit/ghostscript.git/tree/psi/zht2.c >> >> WDYT? Perhaps a new release incorporating the fixes is in order? >> >> FYI, I ported the upstream patches to GNU ghostscript for GNU Guix. >> You can find them here: >> >> http://git.savannah.gnu.org/cgit/guix.git/commit/?id=3D1de17a648fa631f= 0074d315bfff0716220ce4880 >> >> Mark --------------B9CE162A6AB66FFCA20AA20D Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Le 16/10/2016 =C3=A0 17:47, Alex Vong = a =C3=A9crit=C2=A0:
Hello,

I notice the patch for CVE-2016-7977[0] handles the problem differently
than GNU Ghostscript[1] does. Maybe you can take a look at it.

[0]: http://git.ghostscript.com/?p=3Dghostpdl.git;a=3Dcommitdiff;h=3D8=
abd22010eb4db0fb1b10e430d5f5d83e015ef70
[1]: http://git.savannah.gnu.org/cgi=
t/ghostscript.git/tree/psi/zfile.c

Thanks,
Alex

Hello,

I've just released a gnu-ghostscript point release with the CVE patches adapted by Mark (really thanks !!!).

For the CVE-2016-7977 I've see that the file concerned was modified in later release of gpl-ghostscript, I will see in later release of gnu version ;)

Best regards

Didier


Didier Link <didier@famille-link.fr> writes:


Hello all

I will review the Mark's patches and apply them for a security release ne=
xt week.

Thanks for your help !

Best regards

Didier

Le 15/10/2016 =C3=A0 09:36, Mark H Weaver a =C3=A9crit :

 ludo@=
gnu.org (Ludovic Court=C3=A8s) writes:

 Hello Didier and all,

We are wondering about the applicability to GNU=C2=A0Ghostscript of the
recent vulnerabilities discovered in AGPL=C2=A0Ghostscript:

Alex Vong <alexvong1995@gmail.com> skribis:

 Salvatore Bonaccorso <carnil@debian.org> writes:

 ------------------------------------------------------------------------=
-
=20
Debian Security Advisory DSA-3691-1                   security@debian.or=
g
https://www.debian.org/security/                     Salvatore Bo=
naccorso
October 12, 2016                      https://www.debian.org/secur=
ity/faq
-------------------------------------------------------------------------=


Package        : ghostscript
CVE ID         : CVE-2013-5653 CVE-2016-7976 CVE-2016-7977 CVE-2016-7978 =

                 CVE-2016-7979 CVE-2016-8602
Debian Bug     : 839118 839260 839841 839845 839846 840451

Several vulnerabilities were discovered in Ghostscript, the GPL
PostScript/PDF interpreter, which may lead to the execution of arbitrary
code or information disclosure if a specially crafted Postscript file is
processed.

[...]

 I've checked just now. GNU Ghostscript is also affected at least by
CVE-2016-8602. Looking at the patch in this bug report[0] and the
source[1], one can see that the vulnerable lines are present in GNU
Ghostscript. What should we do now?

[0]: https://bugs.debian.org/cgi-bin/bugrep=
ort.cgi?bug=3D840451
[1]: http://git.savannah.gnu.org/cgit=
/ghostscript.git/tree/psi/zht2.c

WDYT?  Perhaps a new release incorporating the fixes is in order?

FYI, I ported the upstream patches to GNU ghostscript for GNU Guix.
You can find them here:

http:/=
/git.savannah.gnu.org/cgit/guix.git/commit/?id=3D1de17a648fa631f0074d315b=
fff0716220ce4880

      Mark


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