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Advisory details: gitlab / maven/org.eclipse.jetty/jetty-server/CVE-2021-28164
Advisory ID gitlab/maven/org.eclipse.jetty/jetty-server/CVE-2021-28164
Aliases CVE-2021-28164
GHSA-v7ff-8wcx-gmc5
Summary Information Exposure In Eclipse Jetty 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.
Status Published
Exploitability 2.0
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv2 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.eclipse.jetty/jetty-server/CVE-2021-28164.yml
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.eclipse.jetty/jetty-server/CVE-2021-28164.yml
Reference id Reference type URL
CVE-2021-28164 https://nvd.nist.gov/vuln/detail/CVE-2021-28164
Data source Metasploit
Description Jetty suffers from a vulnerability where certain encoded URIs and ambiguous paths can access protected files in the WEB-INF folder. Versions effected are: 9.4.37.v20210219, 9.4.38.v20210224 and 9.4.37-9.4.42, 10.0.1-10.0.5, 11.0.1-11.0.5. Exploitation can obtain any file in the WEB-INF folder, but web.xml is most likely to have information of value.
Note 
Stability:
  - crash-safe
Reliability: []
SideEffects:
  - ioc-in-logs
Ransomware campaign use Unknown
Source publication date July 15, 2021
Source URL https://github.com/rapid7/metasploit-framework/tree/master/modules/auxiliary/gather/jetty_web_inf_disclosure.rb
Data source Exploit-DB
Date added Oct. 22, 2021
Description Jetty 9.4.37.v20210219 - Information Disclosure
Ransomware campaign use Unknown
Source publication date Oct. 22, 2021
Exploit type webapps
Platform java
Source update date Oct. 22, 2021

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.eclipse.jetty/jetty-server/CVE-2021-28164.yml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.eclipse.jetty/jetty-server/CVE-2021-28164.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.