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Bug #25764 php segfault when calling ldap_get_option on an unbinded ldap session
Submitted: 2003-10-06 14:46 UTC Modified: 2003-10-06 19:31 UTC
From: jpbarrette at savoirfairelinux dot net Assigned:
Status: Closed Package: LDAP related
PHP Version: 4CVS, 5CVS OS: linux
Private report: No CVE-ID: None
View Developer Edit
 [2003-10-06 14:46 UTC] jpbarrette at savoirfairelinux dot net 
Description:
------------
when I'm trying to get the  LDAP_OPT_ERROR_STRING option, 
by the ldap_get_option function, after the ldap_bind function 
faillure, php is segfaulting. 

Reproduce code:
---------------
<?php
$host = "localhost";
$user = "";
$passwd = "";

$connection = @ldap_connect($this->host, $this->port);
if(!$connection){
  die("unable to connect");
}
    
if(!@ldap_bind($connection, $user, $passwd)){
  echo ldap_error($connection);
  $error  = "";
  echo ldap_get_option($connection, LDAP_OPT_ERROR_STRING, $error);
}
?>

Expected result:
----------------
I'm expecting to get the LDAP_OPT_ERROR_STRING value

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 [2003-10-06 16:25 UTC] jpbarrette at savoirfairelinux dot net 
this is the backtrace but of the 4.3.4RC1 version. (so the problem 
is in the 4.3.4RC1 version too) 
 
#0  0x40260883 in strlen () from /lib/i686/libc.so.6 
#1  0x0807e5d2 in zif_ldap_get_option (ht=136439660, 
return_value=0x2, this_ptr=0x0, return_value_used=0) 
    at /home/jpbarrette/tmp/php-4.3.4RC1/ext/ldap/ldap.c:1621 
#2  0x0817c3df in execute (op_array=0x821e76c) at 
/home/jpbarrette/tmp/php-4.3.4RC1/Zend/zend_execute.c:1616 
#3  0x0816c785 in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) 
    at /home/jpbarrette/tmp/php-4.3.4RC1/Zend/zend.c:885 
#4  0x0813bc43 in php_execute_script (primary_file=0xbffff240) 
at /home/jpbarrette/tmp/php-4.3.4RC1/main/main.c:1723 
#5  0x081820aa in main (argc=2, argv=0xbffff2d4) at 
/home/jpbarrette/tmp/php-4.3.4RC1/sapi/cli/php_cli.c:819 
#6  0x401fdc57 in __libc_start_main () from /lib/i686/libc.so.6
 [2003-10-06 19:31 UTC] sniper@php.net 
This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at http://snaps.php.net/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
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