From 1735f6f53ca19f99c6e9e39496c486af323ba6a8 Mon Sep 17 00:00:00 2001 From: Brian Carlson Date: Wed, 28 Nov 2012 08:54:33 -0500 Subject: [PATCH] Fix misparsing of maketext strings. Case 61251: This commit fixes a misparse of maketext strings that could lead to arbitrary code execution. Basically, maketext was compiling bracket notation into functions, but neglected to escape backslashes inside the content or die on fully-qualified method names when generating the code. This change escapes all such backslashes and dies when a method name with a colon or apostrophe is specified. --- AUTHORS | 1 + dist/Locale-Maketext/lib/Locale/Maketext.pm | 24 ++++++++---------------- 2 files changed, 9 insertions(+), 16 deletions(-) Upstream-Status: Backport Signed-off-by: Saul Wold diff --git a/AUTHORS b/AUTHORS index 70734b0..009dea0 100644 --- a/AUTHORS +++ b/AUTHORS @@ -154,6 +154,7 @@ Breno G. de Oliveira Brent Dax Brooks D Boyd Brian Callaghan +Brian Carlson Brian Clarke brian d foy Brian Fraser diff --git a/dist/Locale-Maketext/lib/Locale/Maketext.pm b/dist/Locale-Maketext/lib/Locale/Maketext.pm index 4822027..63e5fba 100644 --- a/dist/Locale-Maketext/lib/Locale/Maketext.pm +++ b/dist/Locale-Maketext/lib/Locale/Maketext.pm @@ -625,21 +625,9 @@ sub _compile { # 0-length method name means to just interpolate: push @code, ' ('; } - elsif($m =~ /^\w+(?:\:\:\w+)*$/s - and $m !~ m/(?:^|\:)\d/s - # exclude starting a (sub)package or symbol with a digit + elsif($m =~ /^\w+$/s + # exclude anything fancy, especially fully-qualified module names ) { - # Yes, it even supports the demented (and undocumented?) - # $obj->Foo::bar(...) syntax. - $target->_die_pointing( - $string_to_compile, q{Can't use "SUPER::" in a bracket-group method}, - 2 + length($c[-1]) - ) - if $m =~ m/^SUPER::/s; - # Because for SUPER:: to work, we'd have to compile this into - # the right package, and that seems just not worth the bother, - # unless someone convinces me otherwise. - push @code, ' $_[0]->' . $m . '('; } else { @@ -693,7 +681,9 @@ sub _compile { elsif(substr($1,0,1) ne '~') { # it's stuff not containing "~" or "[" or "]" # i.e., a literal blob - $c[-1] .= $1; + my $text = $1; + $text =~ s/\\/\\\\/g; + $c[-1] .= $text; } elsif($1 eq '~~') { # "~~" @@ -731,7 +721,9 @@ sub _compile { else { # It's a "~X" where X is not a special character. # Consider it a literal ~ and X. - $c[-1] .= $1; + my $text = $1; + $text =~ s/\\/\\\\/g; + $c[-1] .= $text; } } } -- 1.8.3.1