Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [day] [month] [year] [list]
Date: Thu, 28 Sep 2023 16:45:36 -0400
From: Christopher Schultz <>
Subject: CVE-2023-41081: Apache Tomcat Connectors: Unexpected use of first
 declared worker in mod_jk for unmapped request [CORRECTION]

Severity: important

Affected versions:

- Apache Tomcat Connectors 1.2.0 through 1.2.48


Important: Authentication Bypass CVE-2023-41081

The mod_jk component of Apache Tomcat Connectors in some circumstances, 
such as when a configuration included "JkOptions +ForwardDirectories" 
but the configuration did not       provide explicit mounts for all 
possible proxied requests, mod_jk would       use an implicit mapping 
and map the request to the first defined worker. Such an implicit 
mapping could result in the unintended exposure of the status worker 
and/or bypass security constraints configured in httpd. As of JK 1.2.49, 
the implicit mapping functionality has been removed and all mappings 
must now be via explicit configuration. Only mod_jk is affected by this 
issue. The ISAPI redirector is not affected.

This issue affects Apache Tomcat Connectors (mod_jk only): from 1.2.0 
through 1.2.48.

Users are recommended to upgrade to version 1.2.49, which fixes the issue.

2023-09-13 Original advisory

2023-09-28 Updated summary


Karl von Randow (finder)


Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.