gnu: mupdf: Fix CVE-2017-{5896,5991}.

* gnu/packages/patches/mupdf-CVE-2017-5896.patch,
gnu/packages/patches/mupdf-CVE-2017-5991.patch: New files.
* gnu/packages/pdf.scm (mupdf/fixed)[source]: Add patches.
* gnu/local.mk (dist_patch_DATA): Add them.

Signed-off-by: Leo Famulari <leo@famulari.name>
This commit is contained in:
Alex Vong 2017-03-02 19:59:05 +08:00 committed by Leo Famulari
parent 89d42ac17c
commit 92ae98e2a0
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4 changed files with 170 additions and 1 deletions

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@ -764,6 +764,8 @@ dist_patch_DATA = \
%D%/packages/patches/mupdf-build-with-openjpeg-2.1.patch \
%D%/packages/patches/mupdf-mujs-CVE-2016-10132.patch \
%D%/packages/patches/mupdf-mujs-CVE-2016-10133.patch \
%D%/packages/patches/mupdf-CVE-2017-5896.patch \
%D%/packages/patches/mupdf-CVE-2017-5991.patch \
%D%/packages/patches/mupen64plus-ui-console-notice.patch \
%D%/packages/patches/musl-CVE-2016-8859.patch \
%D%/packages/patches/mutt-store-references.patch \

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@ -0,0 +1,63 @@
Fix CVE-2017-5896:
https://bugs.ghostscript.com/show_bug.cgi?id=697515
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5896
http://www.openwall.com/lists/oss-security/2017/02/10/1
https://security-tracker.debian.org/tracker/CVE-2017-5896
https://blogs.gentoo.org/ago/2017/02/09/mupdf-use-after-free-in-fz_subsample_pixmap-pixmap-c/
Patch lifted from upstream source repository:
http://git.ghostscript.com/?p=mupdf.git;h=2c4e5867ee699b1081527bc6c6ea0e99a35a5c27
From 2c4e5867ee699b1081527bc6c6ea0e99a35a5c27 Mon Sep 17 00:00:00 2001
From: Robin Watts <Robin.Watts@artifex.com>
Date: Thu, 9 Feb 2017 07:12:16 -0800
Subject: [PATCH] bug 697515: Fix out of bounds read in fz_subsample_pixmap
Pointer arithmetic for final special case was going wrong.
---
source/fitz/pixmap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/source/fitz/pixmap.c b/source/fitz/pixmap.c
index a8317127..f1291dc2 100644
--- a/source/fitz/pixmap.c
+++ b/source/fitz/pixmap.c
@@ -1104,6 +1104,7 @@ fz_subsample_pixmap_ARM(unsigned char *ptr, int w, int h, int f, int factor,
"@STACK:r1,<9>,factor,n,fwd,back,back2,fwd2,divX,back4,fwd4,fwd3,divY,back5,divXY\n"
"ldr r4, [r13,#4*22] @ r4 = divXY \n"
"ldr r5, [r13,#4*11] @ for (nn = n; nn > 0; n--) { \n"
+ "ldr r8, [r13,#4*17] @ r8 = back4 \n"
"18: @ \n"
"mov r14,#0 @ r14= v = 0 \n"
"sub r5, r5, r1, LSL #8 @ for (xx = x; xx > 0; x--) { \n"
@@ -1120,7 +1121,7 @@ fz_subsample_pixmap_ARM(unsigned char *ptr, int w, int h, int f, int factor,
"mul r14,r4, r14 @ r14= v *= divX \n"
"mov r14,r14,LSR #16 @ r14= v >>= 16 \n"
"strb r14,[r9], #1 @ *d++ = r14 \n"
- "sub r0, r0, r8 @ s -= back2 \n"
+ "sub r0, r0, r8 @ s -= back4 \n"
"subs r5, r5, #1 @ n-- \n"
"bgt 18b @ } \n"
"21: @ \n"
@@ -1249,6 +1250,7 @@ fz_subsample_pixmap(fz_context *ctx, fz_pixmap *tile, int factor)
x += f;
if (x > 0)
{
+ int back4 = x * n - 1;
div = x * y;
for (nn = n; nn > 0; nn--)
{
@@ -1263,7 +1265,7 @@ fz_subsample_pixmap(fz_context *ctx, fz_pixmap *tile, int factor)
s -= back5;
}
*d++ = v / div;
- s -= back2;
+ s -= back4;
}
}
}
--
2.12.0

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@ -0,0 +1,101 @@
Fix CVE-2017-5991:
https://bugs.ghostscript.com/show_bug.cgi?id=697500
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5991
https://security-tracker.debian.org/tracker/CVE-2017-5991
Patch lifted from upstream source repository:
http://git.ghostscript.com/?p=mupdf.git;h=1912de5f08e90af1d9d0a9791f58ba3afdb9d465
From 1912de5f08e90af1d9d0a9791f58ba3afdb9d465 Mon Sep 17 00:00:00 2001
From: Robin Watts <robin.watts@artifex.com>
Date: Thu, 9 Feb 2017 15:49:15 +0000
Subject: [PATCH] Bug 697500: Fix NULL ptr access.
Cope better with errors during rendering - avoid letting the
gstate stack get out of sync.
This avoids us ever getting into the situation of popping
a clip when we should be popping a mask or a group. This was
causing an unexpected case in the painting.
---
source/pdf/pdf-op-run.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/source/pdf/pdf-op-run.c b/source/pdf/pdf-op-run.c
index a3ea895d..f1eac8d3 100644
--- a/source/pdf/pdf-op-run.c
+++ b/source/pdf/pdf-op-run.c
@@ -1213,6 +1213,7 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf
pdf_run_processor *pr = (pdf_run_processor *)proc;
pdf_gstate *gstate = NULL;
int oldtop = 0;
+ int oldbot = -1;
fz_matrix local_transform = *transform;
softmask_save softmask = { NULL };
int gparent_save;
@@ -1232,16 +1233,17 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf
fz_var(cleanup_state);
fz_var(gstate);
fz_var(oldtop);
+ fz_var(oldbot);
gparent_save = pr->gparent;
pr->gparent = pr->gtop;
+ oldtop = pr->gtop;
fz_try(ctx)
{
pdf_gsave(ctx, pr);
gstate = pr->gstate + pr->gtop;
- oldtop = pr->gtop;
pdf_xobject_bbox(ctx, xobj, &xobj_bbox);
pdf_xobject_matrix(ctx, xobj, &xobj_matrix);
@@ -1302,12 +1304,25 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf
doc = pdf_get_bound_document(ctx, xobj->obj);
+ oldbot = pr->gbot;
+ pr->gbot = pr->gtop;
+
pdf_process_contents(ctx, (pdf_processor*)pr, doc, resources, xobj->obj, NULL);
}
fz_always(ctx)
{
+ /* Undo any gstate mismatches due to the pdf_process_contents call */
+ if (oldbot != -1)
+ {
+ while (pr->gtop > pr->gbot)
+ {
+ pdf_grestore(ctx, pr);
+ }
+ pr->gbot = oldbot;
+ }
+
if (cleanup_state >= 3)
- pdf_grestore(ctx, pr); /* Remove the clippath */
+ pdf_grestore(ctx, pr); /* Remove the state we pushed for the clippath */
/* wrap up transparency stacks */
if (transparency)
@@ -1341,13 +1356,8 @@ pdf_run_xobject(fz_context *ctx, pdf_run_processor *proc, pdf_xobject *xobj, pdf
pr->gstate[pr->gparent].ctm = gparent_save_ctm;
pr->gparent = gparent_save;
- if (gstate)
- {
- while (oldtop < pr->gtop)
- pdf_grestore(ctx, pr);
-
+ while (oldtop < pr->gtop)
pdf_grestore(ctx, pr);
- }
pdf_unmark_obj(ctx, xobj->obj);
}
--
2.12.0

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@ -11,6 +11,7 @@
;;; Coypright © 2016 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2016 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Alex Vong <alexvong1995@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -550,7 +551,9 @@ and examining the file structure (pdfshow).")
(append
(origin-patches (package-source mupdf))
(search-patches "mupdf-mujs-CVE-2016-10132.patch"
"mupdf-mujs-CVE-2016-10133.patch")))))))
"mupdf-mujs-CVE-2016-10133.patch"
"mupdf-CVE-2017-5896.patch"
"mupdf-CVE-2017-5991.patch")))))))
(define-public qpdf
(package