gnu: graphicsmagick: Fix CVE-2017-{13775,13776,13777}.

* gnu/packages/imagemagick.scm (graphicsmagick)[source]: Add patches.
* gnu/packages/patches/graphicsmagick-CVE-2017-13775.patch,
gnu/packages/patches/graphicsmagick-CVE-2017-13776+CVE-2017-13777.patch:
New files.
* gnu/local.mk (dist_patch_DATA): Register them.

1 files changed, 179 insertions, 0 deletions

diff --git a/gnu/packages/patches/graphicsmagick-CVE-2017-13776+CVE-2017-13777.patch b/gnu/packages/patches/graphicsmagick-CVE-2017-13776+CVE-2017-13777.patch
new file mode 100644
index 0000000000..e129fd58fc
--- /dev/null
+++ b/gnu/packages/patches/graphicsmagick-CVE-2017-13776+CVE-2017-13777.patch
@@ -0,0 +1,179 @@
+http://openwall.com/lists/oss-security/2017/08/31/1
+http://openwall.com/lists/oss-security/2017/08/31/2
+http://hg.code.sf.net/p/graphicsmagick/code/raw-rev/233a720bfd5e
+
+some changes were made to make the patch apply
+
+# HG changeset patch
+# User Bob Friesenhahn <bfriesen@GraphicsMagick.org>
+# Date 1503779175 18000
+# Node ID 233a720bfd5efd378f133a776507ed41230da617
+# Parent  b037d79b6ccd0cfba7ba9ce09b454ed46d688036
+XBM: Fix DOS issues.
+
+diff -r b037d79b6ccd -r 233a720bfd5e coders/xbm.c
+--- a/coders/xbm.c	Sat Aug 26 14:14:13 2017 -0500
++++ b/coders/xbm.c	Sat Aug 26 15:26:15 2017 -0500
+@@ -1,5 +1,5 @@
+ /*
+-% Copyright (C) 2003 -2012 GraphicsMagick Group
++% Copyright (C) 2003-2017 GraphicsMagick Group
+ % Copyright (C) 2002 ImageMagick Studio
+ % Copyright 1991-1999 E. I. du Pont de Nemours and Company
+ %
+@@ -121,13 +121,15 @@
+ 
+ static int XBMInteger(Image *image,short int *hex_digits)
+ {
++  unsigned int
++    flag;
++
+   int
+     c,
+-    flag,
+     value;
+ 
+   value=0;
+-  flag=0;
++  flag=0U;
+   for ( ; ; )
+   {
+     c=ReadBlobByte(image);
+@@ -158,18 +160,14 @@
+   Image
+     *image;
+ 
+-  int
+-    bit;
+-
+-  long
+-    y;
+-
+   register IndexPacket
+     *indexes;
+ 
+-  register long
++  register size_t
++    bytes_per_line,
+     i,
+-    x;
++    x,
++    y;
+ 
+   register PixelPacket
+     *q;
+@@ -177,22 +175,24 @@
+   register unsigned char
+     *p;
+ 
+-  short int
+-    hex_digits[256];
+-
+   unsigned char
+     *data;
+ 
+   unsigned int
++    bit,
++    byte,
++    padding,
++    version;
++
++  int
++    value;
++
++  short int
++    hex_digits[256];
++
++  MagickPassFail
+     status;
+ 
+-  unsigned long
+-    byte,
+-    bytes_per_line,
+-    padding,
+-    value,
+-    version;
+-
+   /*
+     Open image file.
+   */
+@@ -207,6 +207,8 @@
+   /*
+     Read X bitmap header.
+   */
++  (void) memset(buffer,0,sizeof(buffer));
++  name[0]='\0';
+   while (ReadBlobString(image,buffer) != (char *) NULL)
+     if (sscanf(buffer,"#define %s %lu",name,&image->columns) == 2)
+       if ((strlen(name) >= 6) &&
+@@ -278,6 +280,8 @@
+   /*
+     Initialize hex values.
+   */
++  for (i = 0; i < sizeof(hex_digits)/sizeof(hex_digits[0]); i++)
++    hex_digits[i]=(-1);
+   hex_digits['0']=0;
+   hex_digits['1']=1;
+   hex_digits['2']=2;
+@@ -311,40 +315,50 @@
+   */
+   p=data;
+   if (version == 10)
+-    for (i=0; i < (long) (bytes_per_line*image->rows); (i+=2))
++    for (i=0; i < (bytes_per_line*image->rows); (i+=2))
+     {
+       value=XBMInteger(image,hex_digits);
++      if (value < 0)
++        {
++          MagickFreeMemory(data);
++          ThrowReaderException(CorruptImageError,ImproperImageHeader,image);
++        }
+       *p++=(unsigned char) value;
+       if (!padding || ((i+2) % bytes_per_line))
+         *p++=(unsigned char) (value >> 8);
+     }
+   else
+-    for (i=0; i < (long) (bytes_per_line*image->rows); i++)
++    for (i=0; i < (bytes_per_line*image->rows); i++)
+     {
+       value=XBMInteger(image,hex_digits);
++      if (value < 0)
++        {
++          MagickFreeMemory(data);
++          ThrowReaderException(CorruptImageError,ImproperImageHeader,image);
++        }
+       *p++=(unsigned char) value;
+     }
+   /*
+     Convert X bitmap image to pixel packets.
+   */
+   p=data;
+-  for (y=0; y < (long) image->rows; y++)
++  for (y=0; y < image->rows; y++)
+   {
+     q=SetImagePixels(image,0,y,image->columns,1);
+     if (q == (PixelPacket *) NULL)
+       break;
+     indexes=AccessMutableIndexes(image);
+-    bit=0;
+-    byte=0;
+-    for (x=0; x < (long) image->columns; x++)
++    bit=0U;
++    byte=0U;
++    for (x=0; x < image->columns; x++)
+     {
+-      if (bit == 0)
++      if (bit == 0U)
+         byte=(*p++);
+       indexes[x]=byte & 0x01 ? 0x01 : 0x00;
+       bit++;
+-      byte>>=1;
+-      if (bit == 8)
+-        bit=0;
++      byte>>=1U;
++      if (bit == 8U)
++        bit=0U;
+     }
+     if (!SyncImagePixels(image))
+       break;
+