Insecure ENV

RT Developers
1

hi all,

i originally had this problem with RT 2.0.8_02, so i’ve upgraded to 2.0.11
and am still saw the same thing.

due the the set up of the server using the default ‘sendmail’ doesn’t work
so i changed to ‘sendmailpipe’ so i could specify the exact command to use.
which gave the following errors in the apache error and rt logs when rt
tried to send a mail after actions performed via the web interface.

Insecure $ENV{PATH} while running with -T switch at
/usr/local/rt2/lib/RT/Action/SendEmail.pm line 118, line 47.

line 118: open (MAIL, “|$RT::SendmailPath $RT::SendmailArguments”) ||
return(0);

my initial fix/hack was to add

local $ENV{PATH} = ‘’;

as the line above, which got me up and running but does force u to use an
absolute $SendmailPath, and is a bit of a hack :wink:

after looking through the code i noticed that webmux.pl does set $ENV{path}
to a string, which should untaint it. it does however do this for the whole
mod_perl server, which is a bit rude as other apps may be expecting a
different ENV. also depending on what runs in what order at start-up for the
server RT could end up running with a different env. so i local’ed all these
vars, which fixes these probs and seems to have solved my taint probs :slight_smile:

patch below, hope its ok, this is my 1st patch to an open source project :slight_smile:

have fun,
grommit
“In the beginning, there was nothing, which exploded”

diff -c against rt-2-0-11

*** webmux.pl.orig Thu Jan 10 14:05:11 2002
— webmux.pl Thu Jan 10 14:11:21 2002
*** 2,14 ****

RT is (c) 1996-2000 Jesse Vincent (jesse@fsck.com);

use strict;

  • $ENV{‘PATH’} = ‘/bin:/usr/bin’; # or whatever you need

  • $ENV{‘CDPATH’} = ‘’ if defined $ENV{‘CDPATH’};

  • $ENV{‘SHELL’} = ‘/bin/sh’ if defined $ENV{‘SHELL’};

  • $ENV{‘ENV’} = ‘’ if defined $ENV{‘ENV’};

  • $ENV{‘IFS’} = ‘’ if defined $ENV{‘IFS’};

    We really don’t want apache to try to eat all vm

    see

http://perl.apache.org/guide/control.html#Preventing_mod_perl_Processes_Fr

— 2,18 ----

RT is (c) 1996-2000 Jesse Vincent (jesse@fsck.com);

use strict;

  • Secure the ENV

  • Local so that we dont play with the ENV for any other apps, running in

the

  • same mod_perl server and they dont play with ours.

  • local $ENV{‘PATH’} = ‘/bin:/usr/bin’; # or whatever you need

  • local $ENV{‘CDPATH’} = ‘’ if defined $ENV{‘CDPATH’};

  • local $ENV{‘SHELL’} = ‘/bin/sh’ if defined $ENV{‘SHELL’};

  • local $ENV{‘ENV’} = ‘’ if defined $ENV{‘ENV’};

  • local $ENV{‘IFS’} = ‘’ if defined $ENV{‘IFS’};

    We really don’t want apache to try to eat all vm

    see

http://perl.apache.org/guide/control.html#Preventing_mod_perl_Processes_Fr

*** 30,39 ****

! $VERSION=“!!RT_VERSION!!”;

! use lib “!!RT_LIB_PATH!!”;
! use lib “!!RT_ETC_PATH!!”;

#This drags in RT’s config.pm
use config;
— 34,43 ----

! $VERSION=“2.0.11”;

! use lib “/usr/local/rt2/lib”;
! use lib “/usr/local/rt2/etc”;

#This drags in RT’s config.pm
use config;

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