File tomcat-9.0-CVE-2021-25329.patch of Package tomcat.29138
Index: apache-tomcat-9.0.36-src/java/org/apache/catalina/servlets/DefaultServlet.java
===================================================================
--- apache-tomcat-9.0.36-src.orig/java/org/apache/catalina/servlets/DefaultServlet.java
+++ apache-tomcat-9.0.36-src/java/org/apache/catalina/servlets/DefaultServlet.java
@@ -2131,7 +2131,7 @@ public class DefaultServlet extends Http
// First check that the resulting path is under the provided base
try {
- if (!candidate.getCanonicalPath().startsWith(base.getCanonicalPath())) {
+ if (!candidate.getCanonicalFile().toPath().startsWith(base.getCanonicalFile().toPath())) {
return null;
}
} catch (IOException ioe) {
Index: apache-tomcat-9.0.36-src/java/org/apache/catalina/session/FileStore.java
===================================================================
--- apache-tomcat-9.0.36-src.orig/java/org/apache/catalina/session/FileStore.java
+++ apache-tomcat-9.0.36-src/java/org/apache/catalina/session/FileStore.java
@@ -351,7 +351,7 @@ public final class FileStore extends Sto
File file = new File(storageDir, filename);
// Check the file is within the storage directory
- if (!file.getCanonicalPath().startsWith(storageDir.getCanonicalPath())) {
+ if (!file.getCanonicalFile().toPath().startsWith(storageDir.getCanonicalFile().toPath())) {
log.warn(sm.getString("fileStore.invalid", file.getPath(), id));
return null;
}
Index: apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/ContextConfig.java
===================================================================
--- apache-tomcat-9.0.36-src.orig/java/org/apache/catalina/startup/ContextConfig.java
+++ apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/ContextConfig.java
@@ -653,7 +653,8 @@ public class ContextConfig implements Li
String docBaseCanonical = docBaseAbsoluteFile.getCanonicalPath();
// Re-calculate now docBase is a canonical path
- boolean docBaseCanonicalInAppBase = docBaseCanonical.startsWith(appBase.getPath() + File.separatorChar);
+ boolean docBaseCanonicalInAppBase =
+ docBaseAbsoluteFile.getCanonicalFile().toPath().startsWith(appBase.toPath());
String docBase;
if (docBaseCanonicalInAppBase) {
docBase = docBaseCanonical.substring(appBase.getPath().length());
Index: apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/ExpandWar.java
===================================================================
--- apache-tomcat-9.0.36-src.orig/java/org/apache/catalina/startup/ExpandWar.java
+++ apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/ExpandWar.java
@@ -26,6 +26,7 @@ import java.net.JarURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.nio.channels.FileChannel;
+import java.nio.file.Path;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
@@ -116,10 +117,7 @@ public class ExpandWar {
}
// Expand the WAR into the new document base directory
- String canonicalDocBasePrefix = docBase.getCanonicalPath();
- if (!canonicalDocBasePrefix.endsWith(File.separator)) {
- canonicalDocBasePrefix += File.separator;
- }
+ Path canonicalDocBasePath = docBase.getCanonicalFile().toPath();
// Creating war tracker parent (normally META-INF)
File warTrackerParent = warTracker.getParentFile();
@@ -134,14 +132,13 @@ public class ExpandWar {
JarEntry jarEntry = jarEntries.nextElement();
String name = jarEntry.getName();
File expandedFile = new File(docBase, name);
- if (!expandedFile.getCanonicalPath().startsWith(
- canonicalDocBasePrefix)) {
+ if (!expandedFile.getCanonicalFile().toPath().startsWith(canonicalDocBasePath)) {
// Trying to expand outside the docBase
// Throw an exception to stop the deployment
throw new IllegalArgumentException(
sm.getString("expandWar.illegalPath",war, name,
expandedFile.getCanonicalPath(),
- canonicalDocBasePrefix));
+ canonicalDocBasePath));
}
int last = name.lastIndexOf('/');
if (last >= 0) {
@@ -217,10 +214,7 @@ public class ExpandWar {
File docBase = new File(host.getAppBaseFile(), pathname);
// Calculate the document base directory
- String canonicalDocBasePrefix = docBase.getCanonicalPath();
- if (!canonicalDocBasePrefix.endsWith(File.separator)) {
- canonicalDocBasePrefix += File.separator;
- }
+ Path canonicalDocBasePath = docBase.getCanonicalFile().toPath();
JarURLConnection juc = (JarURLConnection) war.openConnection();
juc.setUseCaches(false);
try (JarFile jarFile = juc.getJarFile()) {
@@ -229,14 +223,13 @@ public class ExpandWar {
JarEntry jarEntry = jarEntries.nextElement();
String name = jarEntry.getName();
File expandedFile = new File(docBase, name);
- if (!expandedFile.getCanonicalPath().startsWith(
- canonicalDocBasePrefix)) {
+ if (!expandedFile.getCanonicalFile().toPath().startsWith(canonicalDocBasePath)) {
// Entry located outside the docBase
// Throw an exception to stop the deployment
throw new IllegalArgumentException(
sm.getString("expandWar.illegalPath",war, name,
expandedFile.getCanonicalPath(),
- canonicalDocBasePrefix));
+ canonicalDocBasePath));
}
}
} catch (IOException e) {
Index: apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/HostConfig.java
===================================================================
--- apache-tomcat-9.0.36-src.orig/java/org/apache/catalina/startup/HostConfig.java
+++ apache-tomcat-9.0.36-src/java/org/apache/catalina/startup/HostConfig.java
@@ -598,8 +598,7 @@ public class HostConfig implements Lifec
docBase = new File(host.getAppBaseFile(), context.getDocBase());
}
// If external docBase, register .xml as redeploy first
- if (!docBase.getCanonicalPath().startsWith(
- host.getAppBaseFile().getAbsolutePath() + File.separator)) {
+ if (!docBase.getCanonicalFile().toPath().startsWith(host.getAppBaseFile().toPath())) {
isExternal = true;
deployedApp.redeployResources.put(
contextXml.getAbsolutePath(),
Index: apache-tomcat-9.0.36-src/webapps/docs/changelog.xml
===================================================================
--- apache-tomcat-9.0.36-src.orig/webapps/docs/changelog.xml
+++ apache-tomcat-9.0.36-src/webapps/docs/changelog.xml
@@ -163,6 +163,10 @@
<update>
Update dependency on bnd to 5.1.0. (markt)
</update>
+ <scode>
+ Use <code>java.nio.file.Path</code> to test for one directory being a
+ sub-directory of another in a consistent way. (markt)
+ </scode>
</changelog>
</subsection>
</section>
