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[2013-11-07 17:55 UTC] martin dot koegler at brz dot gv dot at
Description:
------------
parse_packet_soap extracts various data from the response with the following sequence:
zval *zv = master_to_zval(get_conversion(IS_STRING), tmp TSRMLS_CC);
faultstring = Z_STRVAL_P(zv);
It assumes, that zv contains a string, but a typemap allow master_to_zval to return a different type.
Accessing that a different type as string usually least to a segfault via
parse_packet_soap => add_soap_fault => set_soap_fault => add_property_string_ex => crash in strlen
Easiest workaround is to force the string data type via convert_to_string_ex(&zv); before accessing Z_STRVAL_P(zv).
Test script:
---------------
Take any wsdl as test.wsdl and point it to server.php as URL. Adapt client.php to call a existing operation of the wsdl:
client.php:
<?php
function soap_string_from_xml($str)
{ return new stdClass(); }
$client=new soapclient("test.wsdl", array('typemap'=>array(
array("type_ns"=>"http://www.w3.org/2001/XMLSchema", "type_name"=>"string", "from_xml"=>"soap_string_from_xml")
)));
$client->Mist("");
?>
server.php:
<?php header("Content-Type: text/xml"); header("HTTP/1.0 500 Internal Error");?>
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>not present</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>
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Last updated: Mon Oct 27 03:00:02 2025 UTC |
Workaround: --- php-5.5.5/ext/soap/php_packet_soap.c.orig 2013-11-08 13:47:42.100530545 +0100 +++ php-5.5.5/ext/soap/php_packet_soap.c 2013-11-08 13:49:00.252852632 +0100 @@ -192,6 +192,7 @@ tmp = get_node(fault->children, "faultstring"); if (tmp != NULL && tmp->children != NULL) { zval *zv = master_to_zval(get_conversion(IS_STRING), tmp TSRMLS_CC); + convert_to_string_ex(&zv); faultstring = Z_STRVAL_P(zv); FREE_ZVAL(zv); } @@ -199,6 +200,7 @@ tmp = get_node(fault->children, "faultactor"); if (tmp != NULL && tmp->children != NULL) { zval *zv = master_to_zval(get_conversion(IS_STRING), tmp TSRMLS_CC); + convert_to_string_ex(&zv); faultactor = Z_STRVAL_P(zv); FREE_ZVAL(zv); } @@ -222,6 +224,7 @@ tmp = get_node(tmp->children,"Text"); if (tmp != NULL && tmp->children != NULL) { zval *zv = master_to_zval(get_conversion(IS_STRING), tmp TSRMLS_CC); + convert_to_string_ex(&zv); faultstring = Z_STRVAL_P(zv); FREE_ZVAL(zv); }