Fix CVE-2017-1000083.

http://seclists.org/oss-sec/2017/q3/128
https://bugzilla.gnome.org/show_bug.cgi?id=784630

Patch copied from upstream source repository:

https://git.gnome.org/browse/evince/commit/?id=717df38fd8509bf883b70d680c9b1b3cf36732ee

From 717df38fd8509bf883b70d680c9b1b3cf36732ee Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Thu, 6 Jul 2017 20:02:00 +0200
Subject: comics: Remove support for tar and tar-like commands

diff --git a/backend/comics/comics-document.c b/backend/comics/comics-document.c
index 4c74731..641d785 100644
--- a/backend/comics/comics-document.c
+++ b/backend/comics/comics-document.c
@@ -56,8 +56,7 @@ typedef enum
 	RARLABS,
 	GNAUNRAR,
 	UNZIP,
-	P7ZIP,
-	TAR
+	P7ZIP
 } ComicBookDecompressType;
 
 typedef struct _ComicsDocumentClass ComicsDocumentClass;
@@ -117,9 +116,6 @@ static const ComicBookDecompressCommand command_usage_def[] = {
 
         /* 7zip */
 	{NULL               , "%s l -- %s"     , "%s x -y %s -o%s", FALSE, OFFSET_7Z},
-
-        /* tar */
-	{"%s -xOf"          , "%s -tf %s"      , NULL             , FALSE, NO_OFFSET}
 };
 
 static GSList*    get_supported_image_extensions (void);
@@ -364,13 +360,6 @@ comics_check_decompress_command	(gchar          *mime_type,
 			comics_document->command_usage = GNAUNRAR;
 			return TRUE;
 		}
-		comics_document->selected_command =
-				g_find_program_in_path ("bsdtar");
-		if (comics_document->selected_command) {
-			comics_document->command_usage = TAR;
-			return TRUE;
-		}
-
 	} else if (g_content_type_is_a (mime_type, "application/x-cbz") ||
 		   g_content_type_is_a (mime_type, "application/zip")) {
 		/* InfoZIP's unzip program */
@@ -396,12 +385,6 @@ comics_check_decompress_command	(gchar          *mime_type,
 			comics_document->command_usage = P7ZIP;
 			return TRUE;
 		}
-		comics_document->selected_command =
-				g_find_program_in_path ("bsdtar");
-		if (comics_document->selected_command) {
-			comics_document->command_usage = TAR;
-			return TRUE;
-		}
 
 	} else if (g_content_type_is_a (mime_type, "application/x-cb7") ||
 		   g_content_type_is_a (mime_type, "application/x-7z-compressed")) {
@@ -425,27 +408,6 @@ comics_check_decompress_command	(gchar          *mime_type,
 			comics_document->command_usage = P7ZIP;
 			return TRUE;
 		}
-		comics_document->selected_command =
-				g_find_program_in_path ("bsdtar");
-		if (comics_document->selected_command) {
-			comics_document->command_usage = TAR;
-			return TRUE;
-		}
-	} else if (g_content_type_is_a (mime_type, "application/x-cbt") ||
-		   g_content_type_is_a (mime_type, "application/x-tar")) {
-		/* tar utility (Tape ARchive) */
-		comics_document->selected_command =
-				g_find_program_in_path ("tar");
-		if (comics_document->selected_command) {
-			comics_document->command_usage = TAR;
-			return TRUE;
-		}
-		comics_document->selected_command =
-				g_find_program_in_path ("bsdtar");
-		if (comics_document->selected_command) {
-			comics_document->command_usage = TAR;
-			return TRUE;
-		}
 	} else {
 		g_set_error (error,
 			     EV_DOCUMENT_ERROR,
diff --git a/configure.ac b/configure.ac
index 9e9f831..7eb0f1f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -795,7 +795,7 @@ AC_SUBST(TIFF_MIME_TYPES)
 AC_SUBST(APPDATA_TIFF_MIME_TYPES)
 AM_SUBST_NOTMAKE(APPDATA_TIFF_MIME_TYPES)
 if test "x$enable_comics" = "xyes"; then
-        COMICS_MIME_TYPES="application/x-cbr;application/x-cbz;application/x-cb7;application/x-cbt;application/x-ext-cbr;application/x-ext-cbz;application/vnd.comicbook+zip;application/x-ext-cb7;application/x-ext-cbt"
+        COMICS_MIME_TYPES="application/x-cbr;application/x-cbz;application/x-cb7;application/x-ext-cbr;application/x-ext-cbz;application/vnd.comicbook+zip;application/x-ext-cb7;"
         APPDATA_COMICS_MIME_TYPES=$(echo "<mimetype>$COMICS_MIME_TYPES</mimetype>" | sed -e 's/;/<\/mimetype>\n    <mimetype>/g')
         if test -z "$EVINCE_MIME_TYPES"; then
            EVINCE_MIME_TYPES="${COMICS_MIME_TYPES}"
-- 
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