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CVE-2007-5342: Tomcat's default security policy is too open
Severity:
Low
Vendor:
The Apache Software Foundation
Versions Affected:
Tomcat 5.5.9 to 5.5.25
Tomcat 6.0.0 to 6.0.15
Description:
The JULI logging component allows web applications to provide their own
logging configurations. The default security policy does not restrict this
configuration and allows an untrusted web application to add files or
overwrite existing files where the Tomcat process has the necessary file
permissions to do so.
Mitigation:
Apply the following patch to the catalina.policy file
http://svn.apache.org/viewvc?rev=606594&view=rev
The patch will be included in 5.5.25 onwards and 6.0.16 onwards
This patch is also included at the end of this announcement
Example:
An application could have its own WEB-INF/classes/logging.properties
handlers = org.apache.juli.FileHandler
org.apache.juli.FileHandler.level = FINE
org.apache.juli.FileHandler.directory = ${catalina.base}/logs
org.apache.juli.FileHandler.prefix = mylog.
Credit:
This issue was discovered by Delian Krustev.
References:
http://tomcat.apache.org/security.html
Mark Thomas
*** Patch starts below this line ***
Index: catalina.policy
===================================================================
- --- catalina.policy (revision 606588)
+++ catalina.policy (working copy)
@@ -62,7 +62,19 @@
// These permissions apply to the logging API
grant codeBase "file:${catalina.home}/bin/tomcat-juli.jar" {
- - permission java.security.AllPermission;
+ permission java.util.PropertyPermission
"java.util.logging.config.class", "read";
+ permission java.util.PropertyPermission
"java.util.logging.config.file", "read";
+ permission java.lang.RuntimePermission "shutdownHooks";
+ permission java.io.FilePermission
"${catalina.base}${file.separator}conf${file.separator}logging.properties",
"read";
+ permission java.util.PropertyPermission "catalina.base", "read";
+ permission java.util.logging.LoggingPermission "control";
+ permission java.io.FilePermission
"${catalina.base}${file.separator}logs", "read, write";
+ permission java.io.FilePermission
"${catalina.base}${file.separator}logs${file.separator}*", "read, write";
+ permission java.lang.RuntimePermission "getClassLoader";
+ // To enable per context logging configuration, permit read access to
the appropriate file.
+ // Be sure that the logging configuration is secure before enabling
such access
+ // eg for the examples web application:
+ // permission java.io.FilePermission
"${catalina.base}${file.separator}webapps${file.separator}examples${file.separator}WEB-INF${file.separator}classes${file.separator}logging.properties",
"read";
};
// These permissions apply to the server startup code
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