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.
{
"binaries": [
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "jetty"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-extra"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-extra-java"
},
{
"binary_version": "6.1.26-1ubuntu1.2",
"binary_name": "libjetty-java"
}
]
}