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Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving errorhandler setup. NOTE: this issue exists because of an incomplete fix for CVE-2018-17183. (From OE-Core rev: 6c32ea184941d292cd8f0eb898e6cc90120ada40) Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
32 lines
1.0 KiB
Diff
32 lines
1.0 KiB
Diff
From f0a61679d28bc1561640403d92492e199bc1c0f3 Mon Sep 17 00:00:00 2001
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From: Chris Liddell <chris.liddell@artifex.com>
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Date: Wed, 10 Oct 2018 23:25:51 +0100
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Subject: [PATCH 5/5] Bug 699938: .loadfontloop must be an operator
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In the fix for Bug 699816, I omitted to make .loadfontloop into an operator, to
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better hide .forceundef and .putgstringcopy.
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CVE: CVE-2018-17961
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Upstream-Status: Backport [git://git.ghostscript.com/ghostpdl.git]
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Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
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---
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Resource/Init/gs_fonts.ps | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/Resource/Init/gs_fonts.ps b/Resource/Init/gs_fonts.ps
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index 89c3ab7..72feff2 100644
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--- a/Resource/Init/gs_fonts.ps
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+++ b/Resource/Init/gs_fonts.ps
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@@ -1148,7 +1148,7 @@ $error /SubstituteFont { } put
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} loop % end of loop
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- } bind executeonly def % must be bound and hidden for .putgstringcopy
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+ } bind executeonly odef % must be bound and hidden for .putgstringcopy
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currentdict /.putgstringcopy .undef
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--
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2.7.4
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