CVE-2021-28169: Information Exposure

June 9, 2021 (updated November 9, 2023)

In Eclipse Jetty it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to /concat?/%2557EB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

References

nvd.nist.gov/vuln/detail/CVE-2021-28169

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