K51048910 : Eclipse Jetty vulnerability CVE-2021-28169

Security Advisory Description

For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, 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. (CVE-2021-28169)

Impact

An attacker may use this vulnerability to gain access to the temporary directory on the affected system. Exploitation of this vulnerability may lead to disclosure of sensitive information.