Inconsistent interpretation of HTTP requests in Apache Tomcat - CVE-2019-17569

Vulnerability identifier: #VU25806

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2019-17569

CWE-ID: CWE-444

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Apache Foundation

Affected software:
Apache Tomcat

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to improper input validation when processing a Transfer-Encoding headers. A remote attacker can send a specially crafted HTTP request and perform HTTP request smuggling attack.

Install updates from vendor's website.

• https://lists.apache.org/thread.html/r88def002c5c78534674ca67472e035099fbe088813d50062094a1390%40%3Cannounce.tomcat.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html