[PATCH] gnu: catdoc: Fix CVE-2017-11110.

[Alex Vong <alexvong1995@gmail.com>]

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Severity: important
Tags: patch security

Hello,

This patch fixes the latest CVE of catdoc. The upstream repo[0] is not
updated for more than a year, so I grab the patch from openSUSE instead
(which is also used by Debian).


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From 69b2b0ca3b43409e86bd5d01fe72823ef84ee391 Mon Sep 17 00:00:00 2001
From: Alex Vong <alexvong1995@gmail.com>
Date: Thu, 10 Aug 2017 21:02:14 +0800
Subject: [PATCH] gnu: catdoc: Fix CVE-2017-11110.

* gnu/packages/patches/catdoc-CVE-2017-11110.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/textutils.scm (catdoc)[source]: Use it.
---
 gnu/local.mk                                     |  1 +
 gnu/packages/patches/catdoc-CVE-2017-11110.patch | 45 ++++++++++++++++++++++++
 gnu/packages/textutils.scm                       |  2 ++
 3 files changed, 48 insertions(+)
 create mode 100644 gnu/packages/patches/catdoc-CVE-2017-11110.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 3d79d5d22..57c346921 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -534,6 +534,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/calibre-drop-unrar.patch			\
   %D%/packages/patches/calibre-no-updates-dialog.patch		\
   %D%/packages/patches/calibre-use-packaged-feedparser.patch	\
+  %D%/packages/patches/catdoc-CVE-2017-11110.patch		\
   %D%/packages/patches/cdparanoia-fpic.patch			\
   %D%/packages/patches/cdrtools-3.01-mkisofs-isoinfo.patch 	\
   %D%/packages/patches/ceph-disable-cpu-optimizations.patch	\
diff --git a/gnu/packages/patches/catdoc-CVE-2017-11110.patch b/gnu/packages/patches/catdoc-CVE-2017-11110.patch
new file mode 100644
index 000000000..71c44f60f
--- /dev/null
+++ b/gnu/packages/patches/catdoc-CVE-2017-11110.patch
@@ -0,0 +1,45 @@
+Fix CVE-2017-11110:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11110
+https://bugzilla.redhat.com/show_bug.cgi?id=1468471
+https://security-tracker.debian.org/tracker/CVE-2017-11110
+
+Patch copied from openSUSE:
+
+https://build.opensuse.org/package/view_file/openSUSE:Maintenance:6985/catdoc.openSUSE_Leap_42.2_Update/CVE-2017-11110.patch?expand=1
+
+From: Andreas Stieger <astieger@suse.com>
+Date: Mon, 10 Jul 2017 15:37:58 +0000
+References: CVE-2017-11110 http://bugzilla.suse.com/show_bug.cgi?id=1047877
+
+All .doc I found had sectorSize 0x09 at offset 0x1e. Guarding it against <4.
+
+---
+ src/ole.c |    5 +++++
+ 1 file changed, 5 insertions(+)
+
+Index: catdoc-0.95/src/ole.c
+===================================================================
+--- catdoc-0.95.orig/src/ole.c	2016-05-25 06:37:12.000000000 +0200
++++ catdoc-0.95/src/ole.c	2017-07-10 17:42:33.578308107 +0200
+@@ -106,6 +106,11 @@ FILE* ole_init(FILE *f, void *buffer, si
+ 		return NULL;
+ 	}
+  	sectorSize = 1<<getshort(oleBuf,0x1e);
++	/* CVE-2017-11110) */
++ 	if (sectorSize < 4) {
++		fprintf(stderr,"sectorSize < 4 not supported\n");
++		return NULL;
++	}
+ 	shortSectorSize=1<<getshort(oleBuf,0x20);
+ 
+ /* Read BBD into memory */
+@@ -147,7 +152,7 @@ FILE* ole_init(FILE *f, void *buffer, si
+ 		}
+ 
+ 		fseek(newfile, 512+mblock*sectorSize, SEEK_SET);
+-		if(fread(tmpBuf+MSAT_ORIG_SIZE+(sectorSize-4)*i,
++		if(fread(tmpBuf+MSAT_ORIG_SIZE+(sectorSize-4)*i, /* >= 4 for CVE-2017-11110 */
+ 						 1, sectorSize, newfile) != sectorSize) {
+ 			fprintf(stderr, "Error read MSAT!\n");
+ 			ole_finish();
diff --git a/gnu/packages/textutils.scm b/gnu/packages/textutils.scm
index e8ae30cd6..537d01334 100644
--- a/gnu/packages/textutils.scm
+++ b/gnu/packages/textutils.scm
@@ -12,6 +12,7 @@
 ;;; Copyright © 2017 Rene Saavedra <rennes@openmailbox.org>
 ;;; Copyright © 2017 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;; Copyright © 2017 Kei Kebreau <kei@openmailbox.org>
+;;; Copyright © 2017 Alex Vong <alexvong1995@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -409,6 +410,7 @@ runs Word\".")
               (method url-fetch)
               (uri (string-append "http://ftp.wagner.pp.ru/pub/catdoc/"
                                   "catdoc-" version ".tar.gz"))
+              (patches (search-patches "catdoc-CVE-2017-11110.patch"))
               (sha256
                (base32
                 "15h7v3bmwfk4z8r78xs5ih6vd0pskn0rj90xghvbzdjj0cc88jji"))))
-- 
2.14.0


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(I am re-sending this mail for the 3rd time since I didn't receive a
reply from debbugs. This time I decide to mail to guix-devel as well
just in case it doesn't work again.) 

Cheers,
Alex

[0]: http://www.wagner.pp.ru/gitweb/?p=oss/catdoc.git;a=summary

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