Bug #27051 [Com]: Impersonation with FastCGI does not EXEC process as impersonated user

From: Date: Wed, 24 Mar 2010 23:08:31 +0000
Subject: Bug #27051 [Com]: Impersonation with FastCGI does not EXEC process as impersonated user
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=27051&edit=1

 ID:               27051
 Comment by:       heer2351 at zonnet dot nl
 Reported by:      ghoffer at globalscape dot com
 Summary:          Impersonation with FastCGI does not EXEC process as
                   impersonated user
 Status:           Feedback
 Type:             Bug
 Package:          CGI related
 Operating System: Windows
 PHP Version:      5.3
 Assigned To:      pajoye

 New Comment:

This is what I ran:
<?php
echo exec('c:\Windows\System32\whoami');
?> 

ProcMon shows cmd.exe being started by php-cgi.exe
A thread is created running as the correct user.
Excecuted command is: cmd.exe /c "c:\Windows\System32\whoami"

I do notice that the process exits with Exit Status 5, which is normally
access denied.

I have however already tried to give Everyone full access to the whole
machine, i.e. all drives. Still the same error.


Previous Comments:
------------------------------------------------------------------------
[2010-03-25 00:04:10] pajoye@php.net

btw, is it possible to access this box? I could try to debug what's
wrong there as it works just fine with the same constellation here (same
windows, IIS and fcgi versions).

------------------------------------------------------------------------
[2010-03-25 00:00:09] pajoye@php.net

It is not the same context using runas or impersonate.

Did you use "c:\\....\\whoami" or "cmd /c..."?

------------------------------------------------------------------------
[2010-03-24 23:58:27] heer2351 at zonnet dot nl

Result:
PHP Warning: exec(): Unable to fork [c:\Windows\System32\whoami] in
D:\Web\Public\Typo3\v4_2_6\fdha_hr\hr\forkTest.php on line 2

------------------------------------------------------------------------
[2010-03-24 23:56:20] heer2351 at zonnet dot nl

BTW if I run the same script on the webserver using fakeCGI and runas to
run as the application pool user it works.

Fake FastCGI web server
FCGI_PARAMS sent
FCGI_STDIN sent
Launching receive loop
FCGI_STDOUT: X-Powered-By: PHP/5.3.2
Content-type: text/html; charset=utf-8

Hello World!"

FCGI_END_REQUEST received
killing app
FastCGI process exited with 0

So the problem is definitely in the combination IIS6 and PHP 5.3

------------------------------------------------------------------------
[2010-03-24 23:53:10] pajoye@php.net

Can you try using: c:\Windows\System32\whoami please?

------------------------------------------------------------------------


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the rest of the comments, please view the bug report online at

    http://bugs.php.net/bug.php?id=27051


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