Apache Tomcat: CVSS (Max): 9.8*

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.5216
  CVE-2023-41081 Apache Tomcat Connectors (mod_jk) Information Disclosure
                             14 September 2023

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Apache Tomcat
Publisher:         The Apache Software Foundation
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-41081  

Original Bulletin: 
   http://tomcat.apache.org/security-jk.html

Comment: CVSS (Max):  9.8* CVE-2016-6808 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: SUSE, [NIST]
         Calculator:  https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
         * Not all CVSS available when published

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CVE-2023-41081 Apache Tomcat Connectors (mod_jk) Information Disclosure

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
- - Apache Tomcat Connectors mod_jk Connector 1.2.0 to 1.2.48

Description:
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.

Mitigation:
Users of affected versions should apply one of the following mitigations:
- - Upgrade to Apache Tomcat Connector (mod_jk) 1.2.49 or later.
- - Ensure explicit mounts are configured for all possible proxied
   requests

Credit:
This vulnerability was reported responsibly to the Tomcat security team 
by Karl von Randow.

References:
[1] http://tomcat.apache.org/security-jk.html

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