Potential HTTP request smuggling in Apache Tomcat

2020-02-2801:10:58

CWE-444

GitHub Advisory Database

github.com

144

5.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

4.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

0.003 Low

EPSS

Percentile

71.6%

JSON

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.

Affected configurations

Vulners

Node

org.apache.tomcat\Matchtomcat

embed_pdf_projectembed_pdfRange<9.0.31

embed_pdf_projectembed_pdfRange<8.5.51

embed_pdf_projectembed_pdfRange<7.0.100

CPENameOperatorVersion
org.apache.tomcat:tomcatlt9.0.31
org.apache.tomcat:tomcatlt8.5.51
org.apache.tomcat:tomcatlt7.0.100
org.apache.tomcat.embed:tomcat-embed-corelt9.0.31
org.apache.tomcat.embed:tomcat-embed-corelt8.5.51
org.apache.tomcat.embed:tomcat-embed-corelt7.0.100

Name	Operator	Version
org.apache.tomcat:tomcat	lt	9.0.31
org.apache.tomcat:tomcat	lt	8.5.51
org.apache.tomcat:tomcat	lt	7.0.100
org.apache.tomcat.embed:tomcat-embed-core	lt	9.0.31
org.apache.tomcat.embed:tomcat-embed-core	lt	8.5.51
org.apache.tomcat.embed:tomcat-embed-core	lt	7.0.100