PHP :: Bug #71371 :: Segfault using PDO::query() or PDO::execute()
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Bug #71371 Segfault using PDO::query() or PDO::execute()
Submitted: 2016-01-14 17:25 UTC Modified: -
Votes:3
Avg. Score:4.3 ± 0.9
Reproduced:3 of 3 (100.0%)
Same Version:1 (33.3%)
Same OS:0 (0.0%)
From: me at mattbutterworth dot co dot uk Assigned:
Status: Open Package: PDO ODBC
PHP Version: 5.6.17 OS: CentOS 6
Private report: No CVE-ID: None
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 [2016-01-14 17:25 UTC] me at mattbutterworth dot co dot uk
Description:
------------
We are running into a segfault when trying to use PDO ODBC.

PHP version info:


PHP 5.6.16 (cli) (built: Dec  2 2015 10:11:22)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
    with the ionCube PHP Loader (enabled) + Intrusion Protection from ioncube24.com (unconfigured) v5.0.18, Copyright (c) 2002-2015, by ionCube Ltd.
    with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2015, by Zend Technologies
    with Zend Guard Loader v3.3, Copyright (c) 1998-2014, by Zend Technologies


php test.php


Segmentation fault

BT Provided below.



Test script:
---------------
$dsn = 'odbc:driver=SQLServer;database=***;server=***.***.***.***;port=1433';
$user = '*****';
$password = '****';

try {
	$dbh = new \PDO($dsn, $user, $password);
	$dbh->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
} catch (\PDOException $e) {
	echo 'Connection Failed' . $e->getMessage();
}
// Connection , no exceptions

$sql = "SELECT * FROM mytable";
$dsn->query($sql);

Expected result:
----------------
GDB:

Program received signal SIGSEGV, Segmentation fault.
0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
(gdb) bt
#0  0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
#1  0x00000000006867aa in ?? ()
#2  0x00000000006bdcd8 in execute_ex ()
#3  0x00002aaaac1eaf6c in zend_oe () from /opt/alt/php56/usr/lib64/php/modules/ZendGuardLoader.so
#4  0x000000000064fc6a in zend_execute_scripts ()
#5  0x00000000005f130b in php_execute_script ()
#6  0x00000000006f36bd in ?? ()
#7  0x00000000006f4058 in ?? ()
#8  0x0000003ed141d9f4 in __libc_start_main () from /lib64/libc.so.6
#9  0x00000000004264b9 in _start ()



Actual result:
--------------
GDB:

Program received signal SIGSEGV, Segmentation fault.
0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
(gdb) bt
#0  0x00002aaab260b02b in ?? () from /opt/alt/php56/usr/lib64/php/modules/pdo.so
#1  0x00000000006867aa in ?? ()
#2  0x00000000006bdcd8 in execute_ex ()
#3  0x00002aaaac1eaf6c in zend_oe () from /opt/alt/php56/usr/lib64/php/modules/ZendGuardLoader.so
#4  0x000000000064fc6a in zend_execute_scripts ()
#5  0x00000000005f130b in php_execute_script ()
#6  0x00000000006f36bd in ?? ()
#7  0x00000000006f4058 in ?? ()
#8  0x0000003ed141d9f4 in __libc_start_main () from /lib64/libc.so.6
#9  0x00000000004264b9 in _start ()



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