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CVE-2021-33037

Severity

7.3

Description

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.

Mitigation

We recommend upgrading to a version of this component that is not vulnerable to this specific issue.

Note: If this component is included as a bundled/transitive dependency of another component, there may not be an upgrade path. In this instance, we recommend contacting the maintainers who included the vulnerable package. Alternatively, we recommend investigating alternative components or a potential mitigating control.

Project

Apache Tomcat

Apache TomEE

Category
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Tags
data
Date Disclosed

2021-07-12

Date Discovered

2021-05-17

Apache Tomcat 10.0.x

First release:
2021-02-02
CVEs:
15
Support Lifecycle:
Namespace:
jakarta

Apache TomEE 8.0.x

First release:
2019-09-13
CVEs:
74
Support Lifecycle:
Namespace:
javax

Apache TomEE 7.1.x

First release:
2018-09-02
CVEs:
68
Support Lifecycle:
Namespace:
javax

Apache TomEE 7.0.x

First release:
2016-05-17
CVEs:
100
Support Lifecycle:
Namespace:
javax

Apache TomEE 1.7.x

First release:
2014-08-09
CVEs:
87
Support Lifecycle:
Namespace:
javax

Apache TomEE 1.6.x

First release:
2013-11-17
CVEs:
101
Support Lifecycle:
Namespace:
javax

Apache TomEE 1.5.x

First release:
2012-09-28
CVEs:
111
Support Lifecycle:
Namespace:
javax

Apache TomEE 1.0.x

First release:
2012-04-27
CVEs:
121
Support Lifecycle:
Namespace:
javax
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