bugtraq - Re: Gaim festival plugin exploit

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Message-ID: <86ismq8g4n.fsf@blue.stonehenge.com>
Date: 15 Oct 2003 12:17:44 -0700
From: merlyn@...nehenge.com (Randal L. Schwartz)
To: error <error@...tinthenoise.net>
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.netsys.com
Subject: Re: Gaim festival plugin exploit

>>>>> "error" == error  <error@...tinthenoise.net> writes:

error> Perhaps someone should ask:

error> "(Is s/[^\w]//g really that hard to do?!)"

Or if a shell was even needed at all to pump the data.

error> So a fixed version would look like this:

error> AIM::register("Festival TTS", "0.0.1", "goodbye", "");
error> AIM::print("Perl Says", "Loaded Festival TTS");
error> AIM::command("idle", "60000") if ($pro ne "Offline");
error> AIM::add_event_handler("event_im_recv", "synthesize");

error> sub goodbye {
error> 	AIM::print("Module Unloaded", "Unloaded Festival TTS");
error> }

error> sub synthesize {
error>     my $string = $_[0];
error>     $string =~ s/\<.*?\>//g;
error>     $string =~ s/\".*\"//;
error>     $string =~ s/[^\w]//g;
error>     system("echo \"$string\" | /usr/bin/festival --tts");

No, change this to

        open FEST, "|/usr/bin/festival -tts";
        print FEST $string;
        close FEST;

error> }

No shell needed.  No worries, mate.

-- 
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@...nehenge.com> <URL:http://www.stonehenge.com/merlyn/>
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!

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