Re: ghostscript vulnerabilities

[Didier Link]

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 à 09:36, Mark H Weaver a écrit :

address@hidden (Ludovic Courtès) writes:

Hello Didier and all,

We are wondering about the applicability to GNU Ghostscript of the
recent vulnerabilities discovered in AGPL Ghostscript:

Alex Vong <address@hidden> skribis:

Salvatore Bonaccorso <address@hidden> writes:

-------------------------------------------------------------------------
Debian Security Advisory DSA-3691-1                   address@hidden
https://www.debian.org/security/                     Salvatore Bonaccorso
October 12, 2016                      https://www.debian.org/security/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/bugreport.cgi?bug=840451
[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=1de17a648fa631f0074d315bfff0716220ce4880

      Mark

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