Apache Tomcat Connectors: Unexpected use of first declared worker in mod_jk for unmapped request

Vulnerability Description

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. History 2023-09-13 Original advisory 2023-09-28 Updated summary

References

• https://lists.apache.org/thread/rd1r26w7271jyqgzr4492tooyt583d8b
• https://www.openwall.com/lists/oss-security/2023/09/13/2
• https://lists.debian.org/debian-lts-announce/2023/09/msg00027.html
• http://www.openwall.com/lists/oss-security/2023/09/28/7