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Update CVE-2021-28164.yaml

patch-1
sandeep 2021-06-24 23:56:33 +05:30
parent 809668943f
commit a9a161f8c6
1 changed files with 1 additions and 2 deletions
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cves/2021/CVE-2021-28164.yaml
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@ -5,8 +5,7 @@ info:
author: noamrathaus
severity: high
description: |
Requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the WEB-INF directory. For example a request to the ConcatServlet with a URI of /concat?/%2557EB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.
This occurs because both ConcatServlet and WelcomeFilter decode the supplied path to verify it is not within the WEB-INF or META-INF directories. It then uses this decoded path to call RequestDispatcher which will also do decoding of the path. This double decoding allows paths with a doubly encoded WEB-INF to bypass this security check.
The default compliance mode allows requests with URIs that contain %2e or %2e%2e segments to access protected resources within the WEB-INF directory. For example a request to /context/%2e/WEB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.
reference: |
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-v7ff-8wcx-gmc5
- https://github.com/vulhub/vulhub/tree/1239bca12c75630bb2033b728140ed5224dcc6d8/jetty