Skip to content

Potential HTTP request smuggling in Apache Tomcat

Moderate severity GitHub Reviewed Published Feb 28, 2020 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

maven org.apache.tomcat.embed:tomcat-embed-core (Maven)

Affected versions

>= 7.0.98, < 7.0.100
>= 8.5.48, < 8.5.51
>= 9.0.28, < 9.0.31

Patched versions

7.0.100
8.5.51
9.0.31
maven org.apache.tomcat:tomcat (Maven)
>= 7.0.98, < 7.0.100
>= 8.5.48, < 8.5.51
>= 9.0.28, < 9.0.31
7.0.100
8.5.51
9.0.31

Description

The refactoring present in Apache Tomcat versions 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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.

References

Published by the National Vulnerability Database Feb 24, 2020
Reviewed Feb 25, 2020
Published to the GitHub Advisory Database Feb 28, 2020
Last updated Jan 29, 2023

Severity

Moderate
4.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Weaknesses

CVE ID

CVE-2019-17569

GHSA ID

GHSA-767j-jfh2-jvrc

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.