CVE-2018-17189
Published: 30 January 2019
In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.
Notes
| Author | Note |
|---|---|
| leosilva | issue was introduced in 2.4.17 |
| mdeslaur | http2 is disabled in xenial |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
apache2 Launchpad, Ubuntu, Debian |
bionic |
Released
(2.4.29-1ubuntu4.6)
|
| cosmic |
Released
(2.4.34-1ubuntu2.1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(2.4.38-1)
|
|
| xenial |
Not vulnerable
(code not built)
|
|
|
Patches: upstream: https://github.com/apache/httpd/commit/bea40bf64ce390476dc05c48a8699e76a96320a2 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |