This is an automated email from the ASF dual-hosted git repository.
markt pushed a commit to branch 7.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
The following commit(s) were added to refs/heads/7.0.x by this push:
new 53e3039 Improve validation of storage location when using FileStore.
53e3039 is described below
commit 53e30390943c18fca0c9e57dbcc14f1c623cfd06
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Tue May 5 15:50:15 2020 +0100
Improve validation of storage location when using FileStore.
---
java/org/apache/catalina/session/FileStore.java | 19 +++++++++++++++++--
.../apache/catalina/session/LocalStrings.properties | 1 +
webapps/docs/changelog.xml | 3 +++
3 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/java/org/apache/catalina/session/FileStore.java
b/java/org/apache/catalina/session/FileStore.java
index 4a51075..08a02c3 100644
--- a/java/org/apache/catalina/session/FileStore.java
+++ b/java/org/apache/catalina/session/FileStore.java
@@ -33,6 +33,8 @@ import org.apache.catalina.Context;
import org.apache.catalina.Loader;
import org.apache.catalina.Session;
import org.apache.juli.logging.Log;
+import org.apache.juli.logging.LogFactory;
+import org.apache.tomcat.util.res.StringManager;
/**
* Concrete implementation of the <b>Store</b> interface that utilizes
@@ -43,6 +45,10 @@ import org.apache.juli.logging.Log;
*/
public final class FileStore extends StoreBase {
+ private static final Log log = LogFactory.getLog(FileStore.class);
+ private static final StringManager sm =
StringManager.getManager(FileStore.class);
+
+
// ----------------------------------------------------- Constants
/**
@@ -389,11 +395,20 @@ public final class FileStore extends StoreBase {
* used in the file naming.
*/
private File file(String id) throws IOException {
- if (this.directory == null) {
+ File storageDir = directory();
+ if (storageDir == null) {
return null;
}
+
String filename = id + FILE_EXT;
- File file = new File(directory(), filename);
+ File file = new File(storageDir, filename);
+
+ // Check the file is within the storage directory
+ if
(!file.getCanonicalPath().startsWith(storageDir.getCanonicalPath())) {
+ log.warn(sm.getString("fileStore.invalid", file.getPath(), id));
+ return null;
+ }
+
return file;
}
}
diff --git a/java/org/apache/catalina/session/LocalStrings.properties
b/java/org/apache/catalina/session/LocalStrings.properties
index f969a8f..f0d15da 100644
--- a/java/org/apache/catalina/session/LocalStrings.properties
+++ b/java/org/apache/catalina/session/LocalStrings.properties
@@ -32,6 +32,7 @@ applicationSession.value.iae=null value
fileStore.createFailed=Unable to create directory [{0}] for the storage of
session data
fileStore.deleteFailed=Unable to delete file [{0}] which is preventing the
creation of the session storage location
fileStore.deleteSessionFailed=Unable to delete file [{0}] which is no longer
required
+fileStore.invalid=Invalid persistence file [{0}] for session ID [{1}]
fileStore.loading=Loading Session [{0}] from file [{1}]
fileStore.removing=Removing Session [{0}] at file [{1}]
fileStore.saving=Saving Session [{0}] to file [{1}]
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index b14142f..9eb7ebd 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -109,6 +109,9 @@
replacement to <code>:-</code> due to possible conflicts. The
syntax is now <code>${name:-default}</code>. (remm)
</fix>
+ <add>
+ Improve validation of storage location when using FileStore. (markt)
+ </add>
</changelog>
</subsection>
<subsection name="Coyote">
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