CVE-2019-0199
Published: 10 April 2019
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
tomcat8 Launchpad, Ubuntu, Debian |
bionic |
Released
(8.5.39-1ubuntu1~18.04.1)
|
| cosmic |
Released
(8.5.39-1ubuntu1~18.10)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(8.5.38-1)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
tomcat9 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(9.0.16-3~18.04.1)
|
| cosmic |
Not vulnerable
(9.0.16-3~18.10)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(9.0.16-1)
|
|
| xenial |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |