AnnotationController: fix improper authorization vulnerability

This PR is based on 2.5.x branch.

We fix the improper authorization by retrieving the annotation using id
and user id.

We also replace the ParamConverter used to get the requested Annotation
on put and delete actions with an explicit call to AnnotationRepository
in order to prevent a resource enumeration through response discrepancy.

Fixes GHSA-mrqx-mjc4-vfh3

Co-authored-by: Jeremy Benoist <jeremy.benoist@gmail.com>
Signed-off-by: Kevin Decherf <kevin@kdecherf.com>

src/Wallabag/AnnotationBundle/Repository/AnnotationRepository.php

@@ -41,6 +41,24 @@ class AnnotationRepository extends EntityRepository
         ;
     }
 
+    /**
+     * Find annotation by id and user.
+     *
+     * @param int $annotationId
+     * @param int $userId
+     *
+     * @return Annotation
+     */
+    public function findOneByIdAndUserId($annotationId, $userId)
+    {
+        return $this->createQueryBuilder('a')
+                    ->where('a.id = :annotationId')->setParameter('annotationId', $annotationId)
+                    ->andWhere('a.user = :userId')->setParameter('userId', $userId)
+                    ->setMaxResults(1)
+                    ->getQuery()
+                    ->getOneOrNullResult();
+    }
+
     /**
      * Find annotations for entry id.
      *
@@ -49,7 +67,7 @@ class AnnotationRepository extends EntityRepository
      *
      * @return array
      */
-    public function findAnnotationsByPageId($entryId, $userId)
+    public function findByEntryIdAndUserId($entryId, $userId)
     {
         return $this->createQueryBuilder('a')
             ->where('a.entry = :entryId')->setParameter('entryId', $entryId)
@@ -66,7 +84,7 @@ class AnnotationRepository extends EntityRepository
      *
      * @return array
      */
-    public function findLastAnnotationByPageId($entryId, $userId)
+    public function findLastAnnotationByUserId($entryId, $userId)
     {
         return $this->createQueryBuilder('a')
             ->where('a.entry = :entryId')->setParameter('entryId', $entryId)