eclipse jetty CVE-2021-28169 vulnerability in Eclipse and Other Products
Published on June 9, 2021

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For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

Github Repository Vendor Advisory NVD

Vulnerability Analysis

CVE-2021-28169 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an Information Disclosure Vulnerability?

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

CVE-2021-28169 has been classified to as an Information Disclosure vulnerability or weakness.


Products Associated with CVE-2021-28169

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Affected Versions

The Eclipse Foundation Eclipse Jetty:

Vulnerable Packages

The following package name and versions may be associated with CVE-2021-28169

Package Manager Vulnerable Package Versions Fixed In
maven org.eclipse.jetty:jetty-servlets >= 11.0.0, <= 11.0.2 11.0.3
maven org.eclipse.jetty:jetty-servlets >= 10.0.0, <= 10.0.2 10.0.3
maven org.eclipse.jetty:jetty-servlets <= 9.4.40 9.4.41

Exploit Probability

EPSS
90.26%
Percentile
99.59%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.