CVE-2019-17569

Public on 2020-03-09
Modified on 2021-08-20
Description
The refactoring present in Apache Tomcat 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.
Severity
Low
CVSS v3 Base Score
4.3
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 tomcat8 2020-03-09 19:21 ALAS-2020-1353
Amazon Linux 1 tomcat7 2020-03-09 19:20 ALAS-2020-1352

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD CVSSv2 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
NVD CVSSv3 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N