CVE-2021-28164
In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with URIs that contain %2e or %2e%2e segments to access...
- Published
- Apr 1, 2021
- Updated
- Aug 3, 2024
- Assigning CNA
- eclipse
- Evidence observed
- Oct 22, 2021
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NHigh · next 30 days
- Percentile
- 99.7%
- Model date
- Oct 18, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, 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.
Sources
modules/auxiliary/gather/jetty_web_inf_disclosure.rb
Metasploit Framework modulesDeclared conditions
- verification: check_declared($.auxiliary_gather/jetty_web_inf_disclosure.check)
jetty/CVE-2021-28164
Jetty Ambiguous Paths Information Disclosure Vulnerability (CVE-2021-28164)
Vulhub vulnerability labsDeclared conditions
- lab image version: vulhub/jetty:9.4.37(jetty/CVE-2021-28164/docker-compose.yml:services.web.image)
http/cves/2021/CVE-2021-28164.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: dsl($.matchers[*].type)
Responsible use
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