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Bug #34306 wddx_serialize_value() crashes with long array keys
Submitted: 2005-08-30 14:10 UTC Modified: 2005-08-31 16:33 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (100.0%)
From: dmitrysp at yandex dot ru Assigned:
Status: Closed Package: WDDX related
PHP Version: 5CVS, 4CVS (2005-08-31) OS: *
Private report: No CVE-ID: None
View Developer Edit
 [2005-08-30 14:10 UTC] dmitrysp at yandex dot ru 
Description:
------------
Apache2 crash. 

Try Apache2 + PHP 5.1.0RC1, 
Apache2 + PHP 5.1.0-dev (built: Aug 30 2005 08:42:21), 
php.exe 4.3.0 console.

szAppName : Apache.exe     szAppVer : 2.0.54.0     szModName : php5ts.dll     
szModVer : 5.1.0.0     offset : 001e144d     

Reproduce code:
---------------
    $str='';
    for ($i=1; $i<255; $i++) $str.=chr($i);
    $mix=array($str=>1);
    $buf=wddx_serialize_value($mix, 'name'); // apache crash here
    echo "ok";

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AllCommentsChangesGit/SVN commitsRelated reports
 [2005-08-31 11:27 UTC] [email protected] 
Apparently the maximum array key lenght for wddx serializer is 254. It doesn't matter what the content is.
 [2005-08-31 11:28 UTC] [email protected] 
Correction: The max length is 251.
 [2005-08-31 14:43 UTC] [email protected] 
(gdb) bt
#0  0x083b98dd in _zend_is_inconsistent (ht=0x0, file=0x869a3f0 "/usr/src/php/php_5_1/Zend/zend_hash.c", line=1022)
    at /usr/src/php/php_5_1/Zend/zend_hash.c:53
#1  0x083bc002 in zend_hash_move_forward_ex (ht=0x0, pos=0x0) at /usr/src/php/php_5_1/Zend/zend_hash.c:1022
#2  0x08355ed5 in php_wddx_serialize_array (packet=0x0, arr=0x0) at /usr/src/php/php_5_1/ext/wddx/wddx.c:589
 [2005-08-31 14:44 UTC] [email protected] 
Previous frame inner to this frame (corrupt stack?)
 [2005-08-31 16:32 UTC] [email protected] 
This bug has been fixed in CVS.

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/.
 
Thank you for the report, and for helping us make PHP better.

Fixed in HEAD and PHP_5_1 branches. Won't fix elsewhere.
 
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