CVE-2019-9511
Published: 13 August 2019
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Notes
| Author | Note |
|---|---|
| sbeattie | nginx added http2 support in 1.9.5 nghttp2: nghttpd and nghttp are affected, libnghttp2 is not |
| mdeslaur | nghttp2-server is in universe |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
nghttp2 Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| cosmic |
Ignored
(reached end-of-life)
|
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Not vulnerable
(1.39.2-1)
|
|
| focal |
Not vulnerable
(1.39.2-1)
|
|
| groovy |
Not vulnerable
(1.39.2-1)
|
|
| hirsute |
Not vulnerable
(1.39.2-1)
|
|
| impish |
Not vulnerable
(1.39.2-1)
|
|
| jammy |
Not vulnerable
(1.39.2-1)
|
|
| kinetic |
Not vulnerable
(1.39.2-1)
|
|
| lunar |
Not vulnerable
(1.39.2-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.39.2)
|
|
| xenial |
Needed
|
|
| Binaries built from this source package are in Universe and so are supported by the community. | ||
|
nginx Launchpad, Ubuntu, Debian |
bionic |
Released
(1.14.0-0ubuntu1.4)
|
| cosmic |
Ignored
(reached end-of-life)
|
|
| disco |
Released
(1.15.9-0ubuntu1.1)
|
|
| eoan |
Released
(1.16.1-0ubuntu1)
|
|
| focal |
Released
(1.16.1-0ubuntu1)
|
|
| groovy |
Released
(1.16.1-0ubuntu1)
|
|
| hirsute |
Released
(1.16.1-0ubuntu1)
|
|
| impish |
Released
(1.16.1-0ubuntu1)
|
|
| jammy |
Released
(1.16.1-0ubuntu1)
|
|
| kinetic |
Released
(1.16.1-0ubuntu1)
|
|
| lunar |
Released
(1.16.1-0ubuntu1)
|
|
| trusty |
Not vulnerable
(http2 support not implemented)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1.10.3-0ubuntu0.16.04.4)
|
|
|
Patches: upstream: https://github.com/nginx/nginx/commit/94c5eb142e58a86f81eb1369fa6fcb96c2f23d6b |
||
|
nodejs Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Ignored
(reached end-of-life)
|
|
| jammy |
Needs triage
|
|
| kinetic |
Needs triage
|
|
| lunar |
Needs triage
|
|
| trusty |
Needs triage
|
|
| upstream |
Needs triage
|
|
| xenial |
Needs triage
|
|
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |