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59 lines
2.5 KiB
Diff
59 lines
2.5 KiB
Diff
From: Chris Liddell <chris.liddell@artifex.com>
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Date: Tue, 5 Nov 2019 09:45:27 +0000
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Subject: Bug 701841: remove .forceput from /.charkeys
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Origin: https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=485904772c5f0aa1140032746e5a0abfc40f4cef
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Bug: https://bugs.ghostscript.com/show_bug.cgi?id=701841
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Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2019-14869
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When loading Type 1 or Truetype fonts from disk, we attempt to extend the glyph
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name table to include all identifiable glyph names from the Adobe Glyph List.
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In the case of Type 1 fonts, the font itself (almost always) marks the
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CharStrings dictionary as read-only, hence we have to use .forceput for that
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case.
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But for Truetype fonts, the CharStrings dictionary is created internally and is
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not read-only until *after* we have fully populated it (including the extended
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glyph names from the AGL), hence there is no need for .forceput, and no need to
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carry the security risk of using it.
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Replace with regular put.
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[Salvatore Bonaccorso: Backport to 9.26a: Drop last hunck removing
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'executeonly' (hiding .forceput) as this was never added back in 9.26a. Thanks
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to Marc Deslauriers for pointing this out]
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---
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Resource/Init/gs_ttf.ps | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/Resource/Init/gs_ttf.ps b/Resource/Init/gs_ttf.ps
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index 74043d16b0cf..6be8fe9955cd 100644
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--- a/Resource/Init/gs_ttf.ps
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+++ b/Resource/Init/gs_ttf.ps
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@@ -1304,7 +1304,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
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TTFDEBUG { (\n1 setting alias: ) print dup ==only
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( to be the same as ) print 2 index //== exec } if
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- 7 index 2 index 3 -1 roll exch .forceput
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+ 7 index 2 index 3 -1 roll exch put
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} forall
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pop pop pop
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}
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@@ -1322,7 +1322,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
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exch pop
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TTFDEBUG { (\n2 setting alias: ) print 1 index ==only
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( to use glyph index: ) print dup //== exec } if
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- 5 index 3 1 roll .forceput
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+ 5 index 3 1 roll put
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//false
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}
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{
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@@ -1339,7 +1339,7 @@ currentdict /.pickcmap_with_no_xlatmap .undef
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{ % CharStrings(dict) isunicode(boolean) cmap(dict) RAGL(dict) gname(name) codep(integer) gindex(integer)
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TTFDEBUG { (\3 nsetting alias: ) print 1 index ==only
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( to be index: ) print dup //== exec } if
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- exch pop 5 index 3 1 roll .forceput
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+ exch pop 5 index 3 1 roll put
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}
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{
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pop pop
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