CVE-2019-17569 Information

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.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@3Ccommits.tomee.apache.org3E https://lists.apache.org/thread.html/r88def002c5c78534674ca67472e035099fbe088813d50062094a1390403Cannounce.tomcat.apache.org3E https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@3Ccommits.tomee.apache.org3E https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html https://security.netapp.com/advisory/ntap-20200327-0005/ https://www.debian.org/security/2020/dsa-4673 https://www.debian.org/security/2020/dsa-4680 https://www.oracle.com/security-alerts/cpujul2020.html https://www.oracle.com/security-alerts/cpuoct2020.html

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.8