CVEvulnerability

CVE-2019-0199

7.5 HIGH Published 2019-04-10 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-04-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-400

Description

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

Affected configurations

• apache tomcat (>= 8.5.0 <= 8.5.37) • apache tomcat (>= 9.0.1 <= 9.0.14) • apache tomcat 9.0.0

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References