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Merge branch 'master' of https://github.com/nrathaus/nuclei-templates

patch-1
Noam Rathaus 2021-06-13 09:54:52 +03:00
parent 79c64797ab ccdb667d3b
commit b5bdac494b
1 changed files with 8 additions and 14 deletions
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20
vulnerabilities/other/jetty-utility-servlets-concatservlet-double-decoding-information-disclosure-vulnerability.yml → cves/2021/CVE-2021-28164.yaml
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@ -1,23 +1,16 @@
id: jetty-utility-servlets-concatservlet-double-decoding-information-disclosure-vulnerability id: CVE-2021-28164
info: info:
name: Jetty Utility Servlets ConcatServlet Double Decoding Information Disclosure Vulnerability name: Authorization Before Parsing and Canonicalization in jetty
author: noamrathaus author: noamrathaus
severity: high 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.
reference: | reference: |
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq - https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-v7ff-8wcx-gmc5 - https://github.com/eclipse/jetty.project/security/advisories/GHSA-v7ff-8wcx-gmc5
description: | tags: cve,cve2021,jetty
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.
Impact
This affects all versions of ConcatServlet and WelcomeFilter in versions before 9.4.41, 10.0.3 and 11.0.3.
Workarounds
If you cannot update to the latest version of Jetty, you can instead deploy your own version of the ConcatServlet and/or the WelcomeFilter by using the code from the latest version of Jetty.
tags: jetty
requests: requests:
- method: GET - method: GET
@ -34,6 +27,7 @@ requests:
words: words:
- "<url-pattern>/weaver/" - "<url-pattern>/weaver/"
part: body part: body
- type: word - type: word
part: header part: header
words: words: