diff options
Diffstat (limited to 'poky/meta/recipes-extended/ghostscript/ghostscript/CVE-2019-6116-0004.patch')
| -rw-r--r-- | poky/meta/recipes-extended/ghostscript/ghostscript/CVE-2019-6116-0004.patch | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/poky/meta/recipes-extended/ghostscript/ghostscript/CVE-2019-6116-0004.patch b/poky/meta/recipes-extended/ghostscript/ghostscript/CVE-2019-6116-0004.patch new file mode 100644 index 000000000..cc15453f0 --- /dev/null +++ b/poky/meta/recipes-extended/ghostscript/ghostscript/CVE-2019-6116-0004.patch @@ -0,0 +1,136 @@ +From d739565534e955c4336731e4ea4eebc895c09c5c Mon Sep 17 00:00:00 2001 +From: Chris Liddell <chris.liddell@artifex.com> +Date: Tue, 18 Dec 2018 10:42:10 +0000 +Subject: [PATCH 4/7] Harden some uses of .force* operators + +by adding a few immediate evalutions + +CVE: CVE-2019-6116 +Upstream-Status: Backport [git://git.ghostscript.com/ghostpdl.git] + +Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com> +--- + Resource/Init/gs_dps1.ps | 4 ++-- + Resource/Init/gs_fonts.ps | 20 ++++++++++---------- + Resource/Init/gs_init.ps | 6 +++--- + 3 files changed, 15 insertions(+), 15 deletions(-) + +diff --git a/Resource/Init/gs_dps1.ps b/Resource/Init/gs_dps1.ps +index 4fae283..b75ea14 100644 +--- a/Resource/Init/gs_dps1.ps ++++ b/Resource/Init/gs_dps1.ps +@@ -74,7 +74,7 @@ level2dict begin + } odef + % undefinefont has to take local/global VM into account. + /undefinefont % <fontname> undefinefont - +- { .FontDirectory 1 .argindex .forceundef % FontDirectory is readonly ++ { //.FontDirectory 1 .argindex .forceundef % FontDirectory is readonly + .currentglobal + { % Current mode is global; delete from local directory too. + //systemdict /LocalFontDirectory .knownget +@@ -85,7 +85,7 @@ level2dict begin + % definition, copy it into the local directory. + //systemdict /SharedFontDirectory .knownget + { 1 index .knownget +- { .FontDirectory 2 index 3 -1 roll { put } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse } % readonly ++ { //.FontDirectory 2 index 3 -1 roll { put } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse } % readonly + if + } + if +diff --git a/Resource/Init/gs_fonts.ps b/Resource/Init/gs_fonts.ps +index 290da0c..c13a2fc 100644 +--- a/Resource/Init/gs_fonts.ps ++++ b/Resource/Init/gs_fonts.ps +@@ -516,7 +516,7 @@ buildfontdict 3 /.buildfont3 cvx put + if + } + if +- dup .FontDirectory 4 -2 roll { .growput } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse % readonly ++ dup //.FontDirectory 4 -2 roll { .growput } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse % readonly + % If the font originated as a resource, register it. + currentfile .currentresourcefile eq { dup .registerfont } if + readonly +@@ -943,7 +943,7 @@ $error /SubstituteFont { } put + % Try to find a font using only the present contents of Fontmap. + /.tryfindfont { % <fontname> .tryfindfont <font> true + % <fontname> .tryfindfont false +- .FontDirectory 1 index .fontknownget ++ //.FontDirectory 1 index .fontknownget + { % Already loaded + exch pop //true + } +@@ -975,7 +975,7 @@ $error /SubstituteFont { } put + { % Font with a procedural definition + exec % The procedure will load the font. + % Check to make sure this really happened. +- .FontDirectory 1 index .knownget ++ //.FontDirectory 1 index .knownget + { exch pop //true exit } + if + } +@@ -1081,11 +1081,11 @@ $error /SubstituteFont { } put + % because it's different depending on language level. + .currentglobal exch /.setglobal .systemvar exec + % Remove the fake definition, if any. +- .FontDirectory 3 index .forceundef % readonly +- 1 index (r) file .loadfont .FontDirectory exch ++ //.FontDirectory 3 index .forceundef % readonly ++ 1 index (r) file .loadfont //.FontDirectory exch + /.setglobal .systemvar exec + } executeonly +- { .loadfont .FontDirectory ++ { .loadfont //.FontDirectory + } + ifelse + % Stack: fontname fontfilename fontdirectory +@@ -1119,8 +1119,8 @@ $error /SubstituteFont { } put + % Stack: origfontname fontdirectory filefontname fontdict + 3 -1 roll pop + % Stack: origfontname filefontname fontdict +- dup /FontName get dup FontDirectory exch .forceundef +- GlobalFontDirectory exch .forceundef ++ dup /FontName get dup //.FontDirectory exch .forceundef ++ /GlobalFontDirectory .systemvar exch .forceundef + dup length dict .copydict dup 3 index /FontName exch put + 2 index exch definefont + exch +@@ -1176,10 +1176,10 @@ currentdict /.putgstringcopy .undef + { + { + pop dup type /stringtype eq { cvn } if +- .FontDirectory 1 index known not { ++ //.FontDirectory 1 index known not { + 2 dict dup /FontName 3 index put + dup /FontType 1 put +- .FontDirectory 3 1 roll { put } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse % readonly ++ //.FontDirectory 3 1 roll { put } systemdict /superexec known {//superexec}{1183615869 internaldict /superexec get exec} ifelse % readonly + } { + pop + } ifelse +diff --git a/Resource/Init/gs_init.ps b/Resource/Init/gs_init.ps +index 56c0bd2..d9a0829 100644 +--- a/Resource/Init/gs_init.ps ++++ b/Resource/Init/gs_init.ps +@@ -1168,8 +1168,8 @@ errordict /unknownerror .undef + }ifelse + }forall + noaccess pop +- systemdict /.setsafeerrors .forceundef +- systemdict /.SAFERERRORLIST .forceundef ++ //systemdict /.setsafeerrors .forceundef ++ //systemdict /.SAFERERRORLIST .forceundef + } bind executeonly odef + + SAFERERRORS {.setsafererrors} if +@@ -2114,7 +2114,7 @@ currentdict /tempfilepaths undef + + /.locksafe { + .locksafe_userparams +- systemdict /getenv {pop //false} .forceput ++ //systemdict /getenv {pop //false} .forceput + % setpagedevice has the side effect of clearing the page, but + % we will just document that. Using setpagedevice keeps the device + % properties and pagedevice .LockSafetyParams in agreement even +-- +2.18.1 + |
