Make calculation of session storage location more robust

apache · Jan 12, 2022 · 094800b · 094800b
1 parent 4719c4c
commit 094800b
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/java/org/apache/catalina/session/FileStore.java b/java/org/apache/catalina/session/FileStore.java
@@ -349,13 +349,14 @@ private File file(String id) throws IOException {
 
         String filename = id + FILE_EXT;
         File file = new File(storageDir, filename);
+        File canonicalFile = file.getCanonicalFile();
 
         // Check the file is within the storage directory
-        if (!file.getCanonicalFile().toPath().startsWith(storageDir.getCanonicalFile().toPath())) {
+        if (!canonicalFile.toPath().startsWith(storageDir.getCanonicalFile().toPath())) {
             log.warn(sm.getString("fileStore.invalid", file.getPath(), id));
             return null;
         }
 
-        return file;
+        return canonicalFile;
     }
 }
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
@@ -115,6 +115,10 @@
         Add recycling check in the input and output stream isReady to try to
         give a more informative ISE when the facade has been recycled. (remm)
       </fix>
+      <fix>
+        Make the calculation of the session storage location more robust when
+        using file based persistent storage. (markt)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Coyote">