CVE-2019-17569
medium
Apache CVSS v3 Base Score
4.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
8.9%
Exploitation probability in 30 days
Top 5% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: February 24, 2020 (2387 days ago)
Last Modified: August 25, 2026
Vendor: Apache
Source: NVD
Vulnerability Report
Generated by CyberWatcher
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.
CWE
CWE-444Affected Products
apache tomcatapache tomeeopensuse leapnetapp data availability servicesnetapp oncommand system managerdebian debian linuxoracle agile engineering data managementoracle agile product lifecycle managementoracle communications instant messaging serveroracle health sciences empirica inspections