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Added security patch for CVE-2017-7975

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Resolves: #1443940
This commit is contained in:
David Kaspar [Dee'Kej] 2017-05-03 14:12:30 +02:00
parent d520456782
commit ea0a5e0b8c
2 changed files with 39 additions and 1 deletions
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31
ghostscript-9.20-cve-2017-7975.patch Normal file
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@ -0,0 +1,31 @@
From 5e57e483298dae8b8d4ec9aab37a526736ac2e97 Mon Sep 17 00:00:00 2001
From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk>
Date: Wed, 26 Apr 2017 22:12:14 +0100
Subject: [PATCH] Bug 697693: Prevent SEGV due to integer overflow.
While building a Huffman table, the start and end points were susceptible
to integer overflow.
Thank you to Jiaqi for finding this issue and suggesting a patch.
---
jbig2dec/jbig2_huffman.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/jbig2dec/jbig2_huffman.c b/jbig2dec/jbig2_huffman.c
index 511e461..b4189a1 100644
--- a/jbig2dec/jbig2_huffman.c
+++ b/jbig2dec/jbig2_huffman.c
@@ -421,8 +421,8 @@ jbig2_build_huffman_table(Jbig2Ctx *ctx, const Jbig2HuffmanParams *params)
if (PREFLEN == CURLEN) {
int RANGELEN = lines[CURTEMP].RANGELEN;
- int start_j = CURCODE << shift;
- int end_j = (CURCODE + 1) << shift;
+ uint32_t start_j = CURCODE << shift;
+ uint32_t end_j = (CURCODE + 1) << shift;
byte eflags = 0;
if (end_j > max_j) {
--
2.9.3

9
ghostscript.spec
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@ -5,7 +5,7 @@ Summary: A PostScript interpreter and renderer
Name: ghostscript
Version: %{gs_ver}
Release: 8%{?dist}
Release: 9%{?dist}
# Included CMap data is Redistributable, no modification permitted,
# see http://bugzilla.redhat.com/487510
@ -37,6 +37,7 @@ Patch16: ghostscript-9.20-cve-2016-10219.patch
Patch17: ghostscript-9.20-cve-2016-10220.patch
Patch18: ghostscript-9.20-cve-2017-5951.patch
Patch19: ghostscript-9.20-cve-2017-8291.patch
Patch20: ghostscript-9.20-cve-2017-7975.patch
Requires: %{name}-core%{?_isa} = %{version}-%{release}
Requires: %{name}-x11%{?_isa} = %{version}-%{release}
@ -183,6 +184,9 @@ rm -rf expat freetype icclib jasper jpeg jpegxr lcms lcms2 libpng openjpeg zlib
# CVE-2017-8291 (bug #1446063):
%patch19 -p1
# CVE-2017-7975 (bug #1443940):
%patch20 -p1
# Convert manual pages to UTF-8
from8859_1() {
iconv -f iso-8859-1 -t utf-8 < "$1" > "${1}_"
@ -379,6 +383,9 @@ rm -rf $RPM_BUILD_ROOT
%{_libdir}/libgs.so
%changelog
* Wed May 03 2017 David Kaspar [Dee'Kej] <dkaspar@redhat.com> - 9.20-9
- Added security fix for CVE-2017-7975 (bug #1443940)
* Thu Apr 27 2017 David Kaspar [Dee'Kej] <dkaspar@redhat.com> - 9.20-8
- Added security fixes for:
- CVE-2016-10217 (bug #1441564)