gnu: mupdf: Fix CVE-2018-{6544,1000051}.
* gnu/packages/patches/mupdf-CVE-2018-1000051.patch, gnu/packages/patches/mupdf-CVE-2018-6544.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/pdf.scm (mupdf)[source]: Use them.master
Leo Famulari
parent
5bd43f7fd1
commit
4d99a3215c
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@ -929,6 +929,8 @@ dist_patch_DATA = \
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%D%/packages/patches/mumps-build-parallelism.patch \
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%D%/packages/patches/mupdf-build-with-latest-openjpeg.patch \
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%D%/packages/patches/mupdf-CVE-2017-17858.patch \
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%D%/packages/patches/mupdf-CVE-2018-6544.patch \
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%D%/packages/patches/mupdf-CVE-2018-1000051.patch \
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%D%/packages/patches/mupen64plus-ui-console-notice.patch \
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%D%/packages/patches/mutt-store-references.patch \
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%D%/packages/patches/net-tools-bitrot.patch \
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@ -0,0 +1,88 @@
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Fix CVE-2018-1000051:
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https://bugs.ghostscript.com/show_bug.cgi?id=698873
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000051
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Patch copied from upstream source repository:
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https://git.ghostscript.com/?p=mupdf.git;a=commit;h=321ba1de287016b0036bf4a56ce774ad11763384
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From 321ba1de287016b0036bf4a56ce774ad11763384 Mon Sep 17 00:00:00 2001
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From: Sebastian Rasmussen <sebras@gmail.com>
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Date: Tue, 19 Dec 2017 23:47:47 +0100
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Subject: [PATCH] Bug 698825: Do not drop borrowed colorspaces.
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Previously the borrowed colorspace was dropped when updating annotation
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appearances, leading to use after free warnings from valgrind/ASAN.
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---
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source/pdf/pdf-appearance.c | 8 ++------
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1 file changed, 2 insertions(+), 6 deletions(-)
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diff --git a/source/pdf/pdf-appearance.c b/source/pdf/pdf-appearance.c
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index 70f684f4..d7a1dddd 100644
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--- a/source/pdf/pdf-appearance.c
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+++ b/source/pdf/pdf-appearance.c
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@@ -2170,7 +2170,6 @@ void pdf_update_free_text_annot_appearance(fz_context *ctx, pdf_document *doc, p
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fz_device *dev = NULL;
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font_info font_rec;
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fz_text *text = NULL;
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- fz_colorspace *cs = NULL;
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fz_matrix page_ctm;
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pdf_page_transform(ctx, annot->page, NULL, &page_ctm);
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@@ -2184,11 +2183,11 @@ void pdf_update_free_text_annot_appearance(fz_context *ctx, pdf_document *doc, p
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fz_var(dlist);
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fz_var(dev);
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fz_var(text);
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- fz_var(cs);
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fz_try(ctx)
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{
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char *contents = pdf_to_str_buf(ctx, pdf_dict_get(ctx, obj, PDF_NAME_Contents));
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char *da = pdf_to_str_buf(ctx, pdf_dict_get(ctx, obj, PDF_NAME_DA));
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+ fz_colorspace *cs;
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fz_point pos;
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fz_rect rect;
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@@ -2223,7 +2222,6 @@ void pdf_update_free_text_annot_appearance(fz_context *ctx, pdf_document *doc, p
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fz_drop_display_list(ctx, dlist);
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font_info_fin(ctx, &font_rec);
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fz_drop_text(ctx, text);
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- fz_drop_colorspace(ctx, cs);
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}
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fz_catch(ctx)
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{
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@@ -2359,7 +2357,6 @@ void pdf_set_signature_appearance(fz_context *ctx, pdf_document *doc, pdf_annot
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fz_device *dev = NULL;
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font_info font_rec;
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fz_text *text = NULL;
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- fz_colorspace *cs = NULL;
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fz_path *path = NULL;
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fz_buffer *fzbuf = NULL;
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fz_matrix page_ctm;
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@@ -2375,7 +2372,6 @@ void pdf_set_signature_appearance(fz_context *ctx, pdf_document *doc, pdf_annot
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fz_var(dlist);
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fz_var(dev);
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fz_var(text);
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- fz_var(cs);
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fz_var(fzbuf);
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fz_try(ctx)
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{
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@@ -2384,6 +2380,7 @@ void pdf_set_signature_appearance(fz_context *ctx, pdf_document *doc, pdf_annot
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fz_rect logo_bounds;
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fz_matrix logo_tm;
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fz_rect rect;
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+ fz_colorspace *cs = fz_device_rgb(ctx); /* Borrowed reference */
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pdf_to_rect(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_Rect), &annot_rect);
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rect = annot_rect;
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@@ -2396,7 +2393,6 @@ void pdf_set_signature_appearance(fz_context *ctx, pdf_document *doc, pdf_annot
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fz_bound_path(ctx, path, NULL, &fz_identity, &logo_bounds);
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center_rect_within_rect(&logo_bounds, &rect, &logo_tm);
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fz_concat(&logo_tm, &logo_tm, &page_ctm);
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- cs = fz_device_rgb(ctx); /* Borrowed reference */
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fz_fill_path(ctx, dev, path, 0, &logo_tm, cs, logo_color, 1.0f, NULL);
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get_font_info(ctx, doc, dr, da, &font_rec);
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--
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2.16.3
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@ -0,0 +1,109 @@
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Fix CVE-2018-6544:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6544
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https://bugs.ghostscript.com/show_bug.cgi?id=698830
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https://bugs.ghostscript.com/show_bug.cgi?id=698965
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Patches copied from upstream source repository:
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https://git.ghostscript.com/?p=mupdf.git;h=26527eef77b3e51c2258c8e40845bfbc015e405d
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https://git.ghostscript.com/?p=mupdf.git;h=b03def134988da8c800adac1a38a41a1f09a1d89
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From b03def134988da8c800adac1a38a41a1f09a1d89 Mon Sep 17 00:00:00 2001
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From: Sebastian Rasmussen <sebras@gmail.com>
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Date: Thu, 1 Feb 2018 16:36:14 +0100
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Subject: [PATCH] Bug 698830: Avoid recursion when loading object streams
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objects.
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If there were indirect references in the object stream dictionary and
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one of those indirect references referred to an object inside the object
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stream itself, mupdf would previously enter recursion only bounded by the
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exception stack. After this commit the object stream is checked if it is
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marked immediately after being loaded. If it is marked then we terminate
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the recursion at this point, if it is not marked then mark it and
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attempt to load the desired object within. We also take care to unmark
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the stream object when done or upon exception.
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---
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source/pdf/pdf-xref.c | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c
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index 723b543c..ed09094c 100644
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--- a/source/pdf/pdf-xref.c
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+++ b/source/pdf/pdf-xref.c
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@@ -1576,6 +1576,19 @@ pdf_load_obj_stm(fz_context *ctx, pdf_document *doc, int num, pdf_lexbuf *buf, i
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{
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objstm = pdf_load_object(ctx, doc, num);
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+ if (pdf_obj_marked(ctx, objstm))
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+ fz_throw(ctx, FZ_ERROR_GENERIC, "recursive object stream lookup");
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+ }
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+ fz_catch(ctx)
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+ {
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+ pdf_drop_obj(ctx, objstm);
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+ fz_rethrow(ctx);
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+ }
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+
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+ fz_try(ctx)
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+ {
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+ pdf_mark_obj(ctx, objstm);
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+
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count = pdf_to_int(ctx, pdf_dict_get(ctx, objstm, PDF_NAME_N));
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first = pdf_to_int(ctx, pdf_dict_get(ctx, objstm, PDF_NAME_First));
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@@ -1655,6 +1668,7 @@ pdf_load_obj_stm(fz_context *ctx, pdf_document *doc, int num, pdf_lexbuf *buf, i
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fz_drop_stream(ctx, stm);
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fz_free(ctx, ofsbuf);
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fz_free(ctx, numbuf);
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+ pdf_unmark_obj(ctx, objstm);
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pdf_drop_obj(ctx, objstm);
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}
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fz_catch(ctx)
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--
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2.16.3
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From 26527eef77b3e51c2258c8e40845bfbc015e405d Mon Sep 17 00:00:00 2001
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From: Sebastian Rasmussen <sebras@gmail.com>
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Date: Mon, 29 Jan 2018 02:00:48 +0100
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Subject: [PATCH] Bug 698830: Don't drop unkept stream if running out of error
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stack.
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Under normal conditions where fz_keep_stream() is called inside
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fz_try() we may call fz_drop_stream() in fz_catch() upon exceptions.
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The issue comes when fz_keep_stream() has not yet been called but is
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dropped in fz_catch(). This happens in the PDF from the bug when
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fz_try() runs out of exception stack, and next the code in fz_catch()
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runs, dropping the caller's reference to the filter chain stream!
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The simplest way of fixing this it to always keep the filter chain
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stream before fz_try() is called. That way fz_catch() may drop the
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stream whether an exception has occurred or if the fz_try() ran out of
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exception stack.
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---
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source/pdf/pdf-stream.c | 5 ++---
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1 file changed, 2 insertions(+), 3 deletions(-)
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diff --git a/source/pdf/pdf-stream.c b/source/pdf/pdf-stream.c
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index c89da5c4..c6ba7ad3 100644
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--- a/source/pdf/pdf-stream.c
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+++ b/source/pdf/pdf-stream.c
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@@ -303,14 +303,13 @@ pdf_open_raw_filter(fz_context *ctx, fz_stream *chain, pdf_document *doc, pdf_ob
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*orig_gen = 0;
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}
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- fz_var(chain);
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+ chain = fz_keep_stream(ctx, chain);
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fz_try(ctx)
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{
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len = pdf_to_int(ctx, pdf_dict_get(ctx, stmobj, PDF_NAME_Length));
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- /* don't close chain when we close this filter */
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- chain2 = fz_keep_stream(ctx, chain);
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+ chain2 = chain;
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chain = NULL;
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chain = fz_open_null(ctx, chain2, len, offset);
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--
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2.16.3
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@ -574,7 +574,9 @@ extracting content or merging files.")
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(uri (string-append "https://mupdf.com/downloads/archive/"
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name "-" version "-source.tar.xz"))
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(patches (search-patches "mupdf-build-with-latest-openjpeg.patch"
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"mupdf-CVE-2017-17858.patch"))
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"mupdf-CVE-2017-17858.patch"
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"mupdf-CVE-2018-6544.patch"
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"mupdf-CVE-2018-1000051.patch"))
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(sha256
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(base32
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"0b9j0gqbc3jhmx87r6idcsh8lnb30840c3hyx6dk2gdjqqh3hysp"))
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