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HTTP Request Smuggling Affecting tomcat-el-3_0-api package, versions <9.0.36-3.84.1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
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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-SLES150-TOMCATEL30API-2655224
  • published 14 Apr 2022
  • disclosed 16 Nov 2021
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Introduced: 16 Nov 2021

CVE-2021-33037 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade SLES:15.0 tomcat-el-3_0-api to version 9.0.36-3.84.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-el-3_0-api package and not the tomcat-el-3_0-api package as distributed by SLES:15.0. See How to fix? for SLES:15.0 relevant fixed versions and status.

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.