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php/CVE-2021-21702.patch
guoxiaoqi aab1985d09 fix CVE-2021-21702
2021-06-01 16:21:50 +08:00

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From 3c939e3f69955d087e0bb671868f7267dfb2a502 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Sun, 31 Jan 2021 21:15:23 -0800
Subject: [PATCH] Fix bug #80672 - Null Dereference in SoapClient
---
ext/soap/php_sdl.c | 26 ++++++++++++++------------
ext/soap/php_xml.c | 4 ++--
ext/soap/tests/bug80672.phpt | 15 +++++++++++++++
ext/soap/tests/bug80672.xml | 6 ++++++
5 files changed, 37 insertions(+), 14 deletions(-)
create mode 100644 ext/soap/tests/bug80672.phpt
create mode 100644 ext/soap/tests/bug80672.xml
diff --git a/ext/soap/php_sdl.c b/ext/soap/php_sdl.c
index 1875bec41d..67ab4097c2 100644
--- a/ext/soap/php_sdl.c
+++ b/ext/soap/php_sdl.c
@@ -313,6 +313,8 @@ void sdl_restore_uri_credentials(sdlCtx *ctx)
ctx->context = NULL;
}
+#define SAFE_STR(a) ((a)?a:"")
+
static void load_wsdl_ex(zval *this_ptr, char *struri, sdlCtx *ctx, int include)
{
sdlPtr tmpsdl = ctx->sdl;
@@ -374,7 +376,7 @@ static void load_wsdl_ex(zval *this_ptr, char *struri, sdlCtx *ctx, int include)
if (node_is_equal_ex(trav2, "schema", XSD_NAMESPACE)) {
load_schema(ctx, trav2);
} else if (is_wsdl_element(trav2) && !node_is_equal(trav2,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav2->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav2->name));
}
trav2 = trav2->next;
}
@@ -435,7 +437,7 @@ static void load_wsdl_ex(zval *this_ptr, char *struri, sdlCtx *ctx, int include)
soap_error0(E_ERROR, "Parsing WSDL: <service> has no name attribute");
}
} else if (!node_is_equal(trav,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
trav = trav->next;
}
@@ -545,7 +547,7 @@ static sdlSoapBindingFunctionHeaderPtr wsdl_soap_binding_header(sdlCtx* ctx, xml
}
smart_str_free(&key);
} else if (is_wsdl_element(trav) && !node_is_equal(trav,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
trav = trav->next;
}
@@ -647,7 +649,7 @@ static void wsdl_soap_binding_body(sdlCtx* ctx, xmlNodePtr node, char* wsdl_soap
}
smart_str_free(&key);
} else if (is_wsdl_element(trav) && !node_is_equal(trav,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
trav = trav->next;
}
@@ -679,14 +681,14 @@ static HashTable* wsdl_message(sdlCtx *ctx, xmlChar* message_name)
sdlParamPtr param;
if (trav->ns != NULL && strcmp((char*)trav->ns->href, WSDL_NAMESPACE) != 0) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected extensibility element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected extensibility element <%s>", SAFE_STR(trav->name));
}
if (node_is_equal(trav,"documentation")) {
trav = trav->next;
continue;
}
if (!node_is_equal(trav,"part")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
part = trav;
param = emalloc(sizeof(sdlParam));
@@ -695,7 +697,7 @@ static HashTable* wsdl_message(sdlCtx *ctx, xmlChar* message_name)
name = get_attribute(part->properties, "name");
if (name == NULL) {
- soap_error1(E_ERROR, "Parsing WSDL: No name associated with <part> '%s'", message->name);
+ soap_error1(E_ERROR, "Parsing WSDL: No name associated with <part> '%s'", SAFE_STR(message->name));
}
param->paramName = estrdup((char*)name->children->content);
@@ -764,7 +766,7 @@ static sdlPtr load_wsdl(zval *this_ptr, char *struri)
continue;
}
if (!node_is_equal(trav,"port")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
port = trav;
@@ -803,7 +805,7 @@ static sdlPtr load_wsdl(zval *this_ptr, char *struri)
}
}
if (trav2 != address && is_wsdl_element(trav2) && !node_is_equal(trav2,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav2->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav2->name));
}
trav2 = trav2->next;
}
@@ -905,7 +907,7 @@ static sdlPtr load_wsdl(zval *this_ptr, char *struri)
continue;
}
if (!node_is_equal(trav2,"operation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav2->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav2->name));
}
operation = trav2;
@@ -924,7 +926,7 @@ static sdlPtr load_wsdl(zval *this_ptr, char *struri)
!node_is_equal(trav3,"output") &&
!node_is_equal(trav3,"fault") &&
!node_is_equal(trav3,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav3->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav3->name));
}
trav3 = trav3->next;
}
@@ -1102,7 +1104,7 @@ static sdlPtr load_wsdl(zval *this_ptr, char *struri)
}
}
} else if (is_wsdl_element(trav) && !node_is_equal(trav,"documentation")) {
- soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", trav->name);
+ soap_error1(E_ERROR, "Parsing WSDL: Unexpected WSDL element <%s>", SAFE_STR(trav->name));
}
trav = trav->next;
}
diff --git a/ext/soap/php_xml.c b/ext/soap/php_xml.c
index 8d07bb0d83..a1ab525de3 100644
--- a/ext/soap/php_xml.c
+++ b/ext/soap/php_xml.c
@@ -203,7 +203,7 @@ xmlNsPtr node_find_ns(xmlNodePtr node)
int attr_is_equal_ex(xmlAttrPtr node, char *name, char *ns)
{
- if (name == NULL || strcmp((char*)node->name, name) == 0) {
+ if (name == NULL || ((node->name) && strcmp((char*)node->name, name) == 0)) {
if (ns) {
xmlNsPtr nsPtr = attr_find_ns(node);
if (nsPtr) {
@@ -219,7 +219,7 @@ int attr_is_equal_ex(xmlAttrPtr node, char *name, char *ns)
int node_is_equal_ex(xmlNodePtr node, char *name, char *ns)
{
- if (name == NULL || strcmp((char*)node->name, name) == 0) {
+ if (name == NULL || ((node->name) && strcmp((char*)node->name, name) == 0)) {
if (ns) {
xmlNsPtr nsPtr = node_find_ns(node);
if (nsPtr) {
diff --git a/ext/soap/tests/bug80672.phpt b/ext/soap/tests/bug80672.phpt
new file mode 100644
index 0000000000..71e2b1d841
--- /dev/null
+++ b/ext/soap/tests/bug80672.phpt
@@ -0,0 +1,15 @@
+--TEST--
+Bug #80672 Null Dereference in SoapClient
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+try {
+ $client = new SoapClient(__DIR__ . "/bug80672.xml");
+ $query = $soap->query(array('sXML' => 'something'));
+} catch(SoapFault $e) {
+ print $e->getMessage();
+}
+?>
+--EXPECTF--
+SOAP-ERROR: Parsing WSDL: Unexpected WSDL element <>
\ No newline at end of file
diff --git a/ext/soap/tests/bug80672.xml b/ext/soap/tests/bug80672.xml
new file mode 100644
index 0000000000..0fa185bf1e
--- /dev/null
+++ b/ext/soap/tests/bug80672.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<soap:definitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ xmlns:soap="http://schemas.xmlsoap.org/wsdl/">
+<![CDATA[test]]>
+</soap:definitions>
--
2.11.0
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