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Eclipse Jetty Information Disclosure Vulnerability (GHSA-gwcr-j4wh-j3cq)

Information

Severity

Severity

Medium

Family

Family

Web application abuses

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Summary

Eclipse Jetty is prone to an information disclosure vulnerability in the ConcatServlet and WelcomeFilter servlet.

Insight

Insight

Requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the WEB-INF directory. For example a request to the ConcatServlet with a URI of /concat?/%2557EB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application. This occurs because both ConcatServlet and WelcomeFilter decode the supplied path to verify it is not within the WEB-INF or META-INF directories. It then uses this decoded path to call RequestDispatcher which will also do decoding of the path. This double decoding allows paths with a doubly encoded WEB-INF to bypass this security check.

Affected Software

Affected Software

Eclipse Jetty prior to version 9.4.41, 10.x through 10.0.2 and 11.x through 11.0.2.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 9.4.41, 10.0.3, 11.0.3 or later.

Common Vulnerabilities and Exposures (CVE)