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)


0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 12.32% (96th percentile)
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NVD
5.3 medium
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SUSE
4.3 medium
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Red Hat
4.3 medium

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  • Snyk ID SNYK-JAVA-ORGAPACHETOMCATEMBED-1728266
  • published 13 Jul 2021
  • disclosed 13 Jul 2021
  • credit Bahruz Jabiyev of NEU SecLab, Steven Sprecher of NEU SecLab, Kaan Onarlioglu of NEU SecLab

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.