Description
The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to the URI-worker map did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the reverse proxy.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat Connectors | Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | apache2-mod_jk | 1.2.48-2.9 | openSUSE-SU-2024:10625-1 |
Advisories 1
- openSUSE-SU-2024:10625-1 apache2-mod_jk-1.2.48-2.9 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 103389 vdb-entry
- RHSA-2018:1843 vendor-advisory
- https://lists.apache.org/thread.html/6e146bce83578bd870893250ba8354e28f9d8e86c674c30dbeee529f%40%3Cannounce.tomcat.apache.org%3E
- [tomcat-dev] 20190319 svn commit: r1855831 [26/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190325 svn commit: r1856174 [25/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190413 svn commit: r1857494 [18/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [20/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20200203 svn commit: r1873527 [26/30] - /tomcat/site/trunk/docs/ mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [30/34] - /tomcat/site/trunk/docs/ mailing-list