diff options
Diffstat (limited to 'util/TLSProxy/ServerHello.pm')
| -rw-r--r-- | util/TLSProxy/ServerHello.pm | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/util/TLSProxy/ServerHello.pm b/util/TLSProxy/ServerHello.pm index ee2fd727d2..79a8be9a89 100644 --- a/util/TLSProxy/ServerHello.pm +++ b/util/TLSProxy/ServerHello.pm @@ -56,13 +56,25 @@ sub parse my $comp_meth = unpack('C', substr($self->data, $ptr)); $ptr++; my $extensions_len = unpack('n', substr($self->data, $ptr)); - $ptr += 2; + if (!defined $extensions_len) { + $extensions_len = 0; + } else { + $ptr += 2; + } #For now we just deal with this as a block of data. In the future we will #want to parse this - my $extension_data = substr($self->data, $ptr); + my $extension_data; + if ($extensions_len != 0) { + $extension_data = substr($self->data, $ptr); - if (length($extension_data) != $extensions_len) { - die "Invalid extension length\n"; + if (length($extension_data) != $extensions_len) { + die "Invalid extension length\n"; + } + } else { + if (length($self->data) != $ptr) { + die "Invalid extension length\n"; + } + $extension_data = ""; } my %extensions = (); while (length($extension_data) >= 4) { |