39 lines
1.6 KiB
Diff
39 lines
1.6 KiB
Diff
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Fix CVE-2021-22204:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22204
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Patch extracted from commit cf0f4e7dcd024ca99615bfd1102a841a25dde031
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from upstream source repository:
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https://github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031#diff-fa0d652d10dbcd246e6b1df16c1e992931d3bb717a7e36157596b76bdadb3800
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diff --git a/lib/Image/ExifTool/DjVu.pm b/lib/Image/ExifTool/DjVu.pm
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index c284d10..03b3f9f 100644
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--- a/lib/Image/ExifTool/DjVu.pm
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+++ b/lib/Image/ExifTool/DjVu.pm
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@@ -18,7 +18,7 @@ use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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-$VERSION = '1.06';
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+$VERSION = '1.07';
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sub ParseAnt($);
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sub ProcessAnt($$$);
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@@ -227,10 +227,11 @@ Tok: for (;;) {
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last unless $tok =~ /(\\+)$/ and length($1) & 0x01;
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$tok .= '"'; # quote is part of the string
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}
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- # must protect unescaped "$" and "@" symbols, and "\" at end of string
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- $tok =~ s{\\(.)|([\$\@]|\\$)}{'\\'.($2 || $1)}sge;
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- # convert C escape sequences (allowed in quoted text)
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- $tok = eval qq{"$tok"};
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+ # convert C escape sequences, allowed in quoted text
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+ # (note: this only converts a few of them!)
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+ my %esc = ( a => "\a", b => "\b", f => "\f", n => "\n",
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+ r => "\r", t => "\t", '"' => '"', '\\' => '\\' );
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+ $tok =~ s/\\(.)/$esc{$1}||'\\'.$1/egs;
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} else { # key name
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pos($$dataPt) = pos($$dataPt) - 1;
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# allow anything in key but whitespace, braces and double quotes
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