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CVE-2007-5342.txt

CVE-2007-5342.txt
Posted Dec 24, 2007
Authored by Delian Krustev | Site tomcat.apache.org

The JULI logging component in Tomcat versions 5.5.9 through 5.5.25 and versions 6.0.0 to 6.0.15 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.

tags | advisory, web
advisories | CVE-2007-5342
SHA-256 | 66606f1673de22575c8893d54b52647fdb228feb8f44f542c4a94d96aaa28b7d

CVE-2007-5342.txt

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Hash: SHA1

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

*** Patch ends above this line ***






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