Merge pull request from GHSA-236h-rqv8-8q73

* Fix graphql viewer breach

* fix

* remove comment

src/GraphQL/loaders/usersMutations.js

@@ -41,7 +41,7 @@ const load = parseGraphQLSchema => {
         const { fields } = args;
         const { config, auth, info } = context;
 
-        const { sessionToken } = await objectsMutations.createObject(
+        const { sessionToken, objectId } = await objectsMutations.createObject(
           '_User',
           fields,
           config,
@@ -49,15 +49,14 @@ const load = parseGraphQLSchema => {
           info
         );
 
-        info.sessionToken = sessionToken;
+        context.info.sessionToken = sessionToken;
 
         return {
           viewer: await getUserFromSessionToken(
-            config,
-            info,
+            context,
             mutationInfo,
             'viewer.user.',
-            true
+            objectId
           ),
         };
       } catch (e) {
@@ -120,7 +119,7 @@ const load = parseGraphQLSchema => {
         const { fields, authData } = args;
         const { config, auth, info } = context;
 
-        const { sessionToken } = await objectsMutations.createObject(
+        const { sessionToken, objectId } = await objectsMutations.createObject(
           '_User',
           { ...fields, authData },
           config,
@@ -128,15 +127,14 @@ const load = parseGraphQLSchema => {
           info
         );
 
-        info.sessionToken = sessionToken;
+        context.info.sessionToken = sessionToken;
 
         return {
           viewer: await getUserFromSessionToken(
-            config,
-            info,
+            context,
             mutationInfo,
             'viewer.user.',
-            true
+            objectId
           ),
         };
       } catch (e) {
@@ -183,7 +181,7 @@ const load = parseGraphQLSchema => {
         const { username, password } = args;
         const { config, auth, info } = context;
 
-        const { sessionToken } = (
+        const { sessionToken, objectId } = (
           await usersRouter.handleLogIn({
             body: {
               username,
@@ -196,15 +194,14 @@ const load = parseGraphQLSchema => {
           })
         ).response;
 
-        info.sessionToken = sessionToken;
+        context.info.sessionToken = sessionToken;
 
         return {
           viewer: await getUserFromSessionToken(
-            config,
-            info,
+            context,
             mutationInfo,
             'viewer.user.',
-            true
+            objectId
           ),
         };
       } catch (e) {
@@ -236,11 +233,10 @@ const load = parseGraphQLSchema => {
         const { config, auth, info } = context;
 
         const viewer = await getUserFromSessionToken(
-          config,
-          info,
+          context,
           mutationInfo,
           'viewer.user.',
-          true
+          auth.user.id
         );
 
         await usersRouter.handleLogOut({

src/GraphQL/loaders/usersQueries.js

@@ -2,16 +2,16 @@ import { GraphQLNonNull } from 'graphql';
 import getFieldNames from 'graphql-list-fields';
 import Parse from 'parse/node';
 import rest from '../../rest';
-import Auth from '../../Auth';
 import { extractKeysAndInclude } from './parseClassTypes';
+import { Auth } from '../../Auth';
 
 const getUserFromSessionToken = async (
-  config,
-  info,
+  context,
   queryInfo,
   keysPrefix,
-  validatedToken
+  userId
 ) => {
+  const { info, config } = context;
   if (!info || !info.sessionToken) {
     throw new Parse.Error(
       Parse.Error.INVALID_SESSION_TOKEN,
@@ -27,7 +27,7 @@ const getUserFromSessionToken = async (
   const { keys } = keysAndInclude;
   let { include } = keysAndInclude;
 
-  if (validatedToken && !keys && !include) {
+  if (userId && !keys && !include) {
     return {
       sessionToken,
     };
@@ -35,40 +35,47 @@ const getUserFromSessionToken = async (
     include = 'user';
   }
 
+  if (userId) {
+    // We need to re create the auth context
+    // to avoid security breach if userId is provided
+    context.auth = new Auth({
+      config,
+      isMaster: context.auth.isMaster,
+      user: { id: userId },
+    });
+  }
+
   const options = {};
   if (keys) {
     options.keys = keys
       .split(',')
-      .map(key => `user.${key}`)
+      .map(key => `${key}`)
       .join(',');
   }
   if (include) {
     options.include = include
       .split(',')
-      .map(included => `user.${included}`)
+      .map(included => `${included}`)
       .join(',');
   }
 
   const response = await rest.find(
     config,
-    Auth.master(config),
-    '_Session',
-    { sessionToken },
+    context.auth,
+    '_User',
+    // Get the user it self from auth object
+    { objectId: context.auth.user.id },
     options,
     info.clientVersion,
-    info.context,
+    info.context
   );
-  if (
-    !response.results ||
-    response.results.length == 0 ||
-    !response.results[0].user
-  ) {
+  if (!response.results || response.results.length == 0) {
     throw new Parse.Error(
       Parse.Error.INVALID_SESSION_TOKEN,
       'Invalid session token'
     );
   } else {
-    const user = response.results[0].user;
+    const user = response.results[0];
     return {
       sessionToken,
       user,
@@ -89,10 +96,8 @@ const load = parseGraphQLSchema => {
       type: new GraphQLNonNull(parseGraphQLSchema.viewerType),
       async resolve(_source, _args, context, queryInfo) {
         try {
-          const { config, info } = context;
           return await getUserFromSessionToken(
-            config,
-            info,
+            context,
             queryInfo,
             'user.',
             false