Access Restriction Bypass Affecting org.eclipse.jetty:jetty-webapp package, versions [9.4.37,9.4.43)[10.0.1,10.0.6)[11.0.1,11.0.6)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
63.26% (99th percentile)

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  • Snyk IDSNYK-JAVA-ORGECLIPSEJETTY-1319666
  • published16 Jul 2021
  • disclosed16 Jul 2021
  • creditcangqingzhe, CloverSecLabs

Introduced: 16 Jul 2021

CVE-2021-34429  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade org.eclipse.jetty:jetty-webapp to version 9.4.43, 10.0.6, 11.0.6 or higher.

Overview

org.eclipse.jetty:jetty-webapp is a maven plugin for Jetty web application support.

Affected versions of this package are vulnerable to Access Restriction Bypass. URIs can be crafted using some encoded characters to access the content of the WEB-INF directory and/or bypass some security constraints. For example, a request to /%u002e/WEB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application. Similarly, an encoded null character can prevent correct normalization so that /.%00/WEB-INF/web.xml can also retrieve the web.xml file.

CVSS Scores

version 3.1