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HTTP Request Smuggling Affecting tomcat-jsp-2_3-api package, versions <9.0.31-3.42.2

0.0
medium

Snyk CVSS

    Attack Complexity High
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NVD
4.8 medium
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Red Hat
4.3 medium
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SUSE
4.8 medium

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  • Snyk ID SNYK-SLES150-TOMCATJSP23API-2714177
  • published 14 Apr 2022
  • disclosed 5 Mar 2020
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Introduced: 5 Mar 2020

CVE-2020-1935 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade SLES:15.0 tomcat-jsp-2_3-api to version 9.0.31-3.42.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-jsp-2_3-api package and not the tomcat-jsp-2_3-api package as distributed by SLES:15.0. See How to fix? for SLES:15.0 relevant fixed versions and status.

In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.