Vulnerability · Published Apr 1, 2021 · Assigned by eclipse

CVE-2021-28164

Medium 5.3

In plain English

A medium-severity information exposure in Eclipse Jetty from The Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 82.4% (higher than 99.7% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)82.4%top 0.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling3Metasploit, Nuclei, Public PoC

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12jetty99.4.39-1DEBIAN-CVE-2021-28164
Debian:13jetty99.4.39-1DEBIAN-CVE-2021-28164
Debian:14jetty99.4.39-1DEBIAN-CVE-2021-28164
Mavenorg.eclipse.jetty:jetty-webapp9.4.39GHSA-v7ff-8wcx-gmc5
Ubuntu:22.04:LTSequinox-bundlesno fix listedUBUNTU-CVE-2021-28164

Affected products (as reported)

VendorProductVersions
The Eclipse Foundation Eclipse Jetty 9.4.37.v20210219 – before unspecifiedunspecified – through 9.4.38.v20210224

Weakness: CWE-200, CWE-551 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References