gnu: Poppler: Fix CVE-2018-19149.

* gnu/packages/patches/poppler-CVE-2018-19149.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/pdf.scm (poppler)[replacement]: New field.
(poppler/fixed): New variable.
(poppler-qt4, poppler-qt5): Use package/inherit.

gnu/local.mk

@@ -1046,6 +1046,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/plink-1.07-unclobber-i.patch		\
   %D%/packages/patches/plink-endian-detection.patch		\
   %D%/packages/patches/plotutils-libpng-jmpbuf.patch		\
+  %D%/packages/patches/poppler-CVE-2018-19149.patch		\
   %D%/packages/patches/portaudio-audacity-compat.patch		\
   %D%/packages/patches/portmidi-modular-build.patch		\
   %D%/packages/patches/potrace-tests.patch			\

gnu/packages/patches/poppler-CVE-2018-19149.patch

@@ -0,0 +1,80 @@
+Fix CVE-2018-19149:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19149
+https://gitlab.freedesktop.org/poppler/poppler/issues/664
+
+Patch copied from upstream source repository:
+
+https://gitlab.freedesktop.org/poppler/poppler/commit/f162ecdea0dda5dbbdb45503c1d55d9afaa41d44
+
+From f162ecdea0dda5dbbdb45503c1d55d9afaa41d44 Mon Sep 17 00:00:00 2001
+From: Marek Kasik <mkasik@redhat.com>
+Date: Fri, 20 Apr 2018 11:38:13 +0200
+Subject: [PATCH] Fix crash on missing embedded file
+
+Check whether an embedded file is actually present in the PDF
+and show warning in that case.
+
+https://bugs.freedesktop.org/show_bug.cgi?id=106137
+https://gitlab.freedesktop.org/poppler/poppler/issues/236
+---
+ glib/poppler-attachment.cc | 26 +++++++++++++++++---------
+ glib/poppler-document.cc   |  3 ++-
+ 2 files changed, 19 insertions(+), 10 deletions(-)
+
+diff --git a/glib/poppler-attachment.cc b/glib/poppler-attachment.cc
+index c6502e9d..11ba5bb5 100644
+--- a/glib/poppler-attachment.cc
++++ b/glib/poppler-attachment.cc
+@@ -111,17 +111,25 @@ _poppler_attachment_new (FileSpec *emb_file)
+     attachment->description = _poppler_goo_string_to_utf8 (emb_file->getDescription ());
+ 
+   embFile = emb_file->getEmbeddedFile();
+-  attachment->size = embFile->size ();
++  if (embFile != NULL && embFile->streamObject()->isStream())
++    {
++      attachment->size = embFile->size ();
+ 
+-  if (embFile->createDate ())
+-    _poppler_convert_pdf_date_to_gtime (embFile->createDate (), (time_t *)&attachment->ctime);
+-  if (embFile->modDate ())
+-    _poppler_convert_pdf_date_to_gtime (embFile->modDate (), (time_t *)&attachment->mtime);
++      if (embFile->createDate ())
++        _poppler_convert_pdf_date_to_gtime (embFile->createDate (), (time_t *)&attachment->ctime);
++      if (embFile->modDate ())
++        _poppler_convert_pdf_date_to_gtime (embFile->modDate (), (time_t *)&attachment->mtime);
+ 
+-  if (embFile->checksum () && embFile->checksum ()->getLength () > 0)
+-    attachment->checksum = g_string_new_len (embFile->checksum ()->getCString (),
+-                                             embFile->checksum ()->getLength ());
+-  priv->obj_stream = embFile->streamObject()->copy();
++      if (embFile->checksum () && embFile->checksum ()->getLength () > 0)
++        attachment->checksum = g_string_new_len (embFile->checksum ()->getCString (),
++                                                 embFile->checksum ()->getLength ());
++      priv->obj_stream = embFile->streamObject()->copy();
++    }
++  else
++    {
++      g_warning ("Missing stream object for embedded file");
++      g_clear_object (&attachment);
++    }
+ 
+   return attachment;
+ }
+diff --git a/glib/poppler-document.cc b/glib/poppler-document.cc
+index 83f6aea6..ea319344 100644
+--- a/glib/poppler-document.cc
++++ b/glib/poppler-document.cc
+@@ -670,7 +670,8 @@ poppler_document_get_attachments (PopplerDocument *document)
+       attachment = _poppler_attachment_new (emb_file);
+       delete emb_file;
+ 
+-      retval = g_list_prepend (retval, attachment);
++      if (attachment != NULL)
++        retval = g_list_prepend (retval, attachment);
+     }
+   return g_list_reverse (retval);
+ }
+-- 
+2.19.1
+

gnu/packages/pdf.scm

@@ -82,6 +82,7 @@
 (define-public poppler
   (package
    (name "poppler")
+   (replacement poppler/fixed)
    (version "0.63.0")
    (source (origin
             (method url-fetch)
@@ -127,6 +128,14 @@
    (license license:gpl2+)
    (home-page "https://poppler.freedesktop.org/")))
 
+(define poppler/fixed
+  (package
+    (inherit poppler)
+    (source (origin
+              (inherit (package-source poppler))
+              (patches (append (origin-patches (package-source poppler))
+                               (search-patches "poppler-CVE-2018-19149.patch")))))))
+
 (define-public poppler-data
   (package
     (name "poppler-data")
@@ -158,14 +167,14 @@ When present, Poppler is able to correctly render CJK and Cyrillic text.")
                    license:gpl2))))
 
 (define-public poppler-qt4
-  (package (inherit poppler)
+  (package/inherit poppler
    (name "poppler-qt4")
    (inputs `(("qt-4" ,qt-4)
              ,@(package-inputs poppler)))
    (synopsis "Qt4 frontend for the Poppler PDF rendering library")))
 
 (define-public poppler-qt5
-  (package (inherit poppler)
+  (package/inherit poppler
    (name "poppler-qt5")
    (inputs `(("qtbase" ,qtbase)
              ,@(package-inputs poppler)))