#48786 [NEW]: PCRE crashes Apache connection using xampp

From:             David dot Gausmann at measx dot com
Operating system: Windows XP SP3
PHP version:      6CVS-2009-07-03 (CVS)
PHP Bug Type:     PCRE related
Bug description:  PCRE crashes Apache connection using xampp

Description:
------------
Hello,

this Bugs seems to be similiar to http://bugs.php.net/bug.php?id=38512

My php version is 5.2.9 (because the current xampp version seems not to
include a newer one).
I've tried to replace the php files in the xampp installation, but it
results in a crash.
Please don't be angry that I've chosen a wrong php version here.

I'm using PCRE to evaluate VBS source codes.
To do this I use the current xampp version (1.7.1 / win32).

During the evaluation process I've modified a regular expression.
After that my browser told me "the server has reset the connection".

As you can see the string (which shall be evaluated) is very long.

I found out that error depends on three things:
1. The length of the evaluation string
2. The |"" in the pattern (which is wrong for VBS evaluation, but it was
a
test)
3. The "\'" in the evaluation string

If the pattern whould be wrong then only a php error should occur.

An other interesting fact is that the php script works fine if I execute
the
script with the php.exe directly.
Hence the error depends on the combination apache - php - pcre

I've already reported this bug to PCRE, but they said I should report it
here.

Kind Regards
David Gausmann (Bananen-Joe)

Reproduce code:
---------------
$sContent = 'Call ABCDEFGHJIKLMNOPQRSTUVWXYZ("Lorem Ipsum dolor sit amet,
consectetuer elitr\'" & VARIABLE & "\'" & vbCRLF &                        
    
               vbCRLF &                                            
"Lorem
ipsum dolor sit amet conset" & vbCRLF &                                   
    
    vbCRLF &                                             "Lorem ipsum
dolor sit
amet consectetuer sadipscing.")';
echo
preg_match('/^(?:[^"]|"(?:[^"]|"")*")*(?:var_alloc)\s*\(?\s*"[^"]+".*$/i',
$sContent);

Expected result:
----------------
preg_match should return 0 (no match)

Actual result:
--------------
The apache aborts the connection

-- 
Edit bug report at http://bugs.php.net/?id=48786&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        http://bugs.php.net/fix.php?id=48786&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        http://bugs.php.net/fix.php?id=48786&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        http://bugs.php.net/fix.php?id=48786&r=trysnapshot60
Fixed in CVS:                        http://bugs.php.net/fix.php?id=48786&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48786&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=48786&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=48786&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=48786&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=48786&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=48786&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=48786&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=48786&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=48786&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=48786&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=48786&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=48786&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=48786&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=48786&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=48786&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=48786&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=48786&r=mysqlcfg