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Bug #16488 Additional MTA argument shell ESCAPING IS USELESS
Submitted: 2002-04-08 06:08 UTC Modified: 2002-04-08 10:32 UTC
From: spam4octan at highway dot ru Assigned:
Status: Closed Package: Mail related
PHP Version: 4.1.2 OS: LInux Red Hat
Private report: No CVE-ID: None
 [2002-04-08 06:08 UTC] spam4octan at highway dot ru
Dear PHP People!

  extra_cmd = php_escape_shell_arg(Z_STRVAL_PP(argv[4]));

I find shell escaping of the 5th argument of mail() useless, because IT PREVENTS ME FROM GIVING MORE THAN ONE OPTION TO MY MTA !

Sendmail `' is DEFINETELY NOT the only one use of the 5th argument! 

Consider `long' sendmail options:
-O DeliveryMode=q -O ErrorMode=q

This became
/usr/sbin/sendmail -i -t '-O DeliveryMode=q -O ErrorMode=q'

... and completely disabled my script functionality !

If I need shell escaping, I can do it myself!

Ask Yourself: why should PHP care about some (brain-damaged) coders who passess arbitrary strings to popen() without escaping?


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 [2002-04-08 06:13 UTC]

 [2002-04-08 06:37 UTC]

There's a valid point to pass more then one argument.

Afaik Stefan brought this up on the dev list a few weeks ago, though I don't remember the consensus; maybe he can answer this.

 [2002-04-08 10:32 UTC]
This function was originally without the shell escape thing. Please search the archive why they made me 'fix' it, all I can remember that it was a security thingy.

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