HTTP Request Smuggling Affecting org.apache.tomcat.embed:tomcat-embed-core package, versions [10.0.0-M1,10.0.7)[9.0.0.M1,9.0.48)[8.5.0,8.5.68)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
10.89% (96th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-JAVA-ORGAPACHETOMCATEMBED-1728266
  • published13 Jul 2021
  • disclosed13 Jul 2021
  • creditBahruz Jabiyev of NEU SecLab, Steven Sprecher of NEU SecLab, Kaan Onarlioglu of NEU SecLab

Introduced: 13 Jul 2021

CVE-2021-33037  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade org.apache.tomcat.embed:tomcat-embed-core to version 10.0.7, 9.0.48, 8.5.68 or higher.

Overview

org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation.

Affected versions of this package are vulnerable to HTTP Request Smuggling. Tomcat does not correctly parse the HTTP transfer-encoding request header in some circumstances, leading to the possibility of request smuggling when used with a reverse proxy.

Specifically, Tomcat incorrectly ignores the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; it honours the identify encoding; and it does not ensure that, if present, the chunked encoding was the final encoding.

CVSS Scores

version 3.1