Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2019-9512

Published: 13 August 2019

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

From the Ubuntu Security Team

It was discovered that Netty incorrectly implements HTTP/2. An attacker could possibly use this issue to cause a denial of service.

Notes

AuthorNote
sbeattie
nginx added http2 support in 1.9.5
nginx previously fixed issue for CVE-2018-16844
netty added http2 support in 4.1.0
nghttp2: nghttpd and nghttp are affected, libnghttp2 is not
twisted added http2 support in 16.3
trafficserver enabled http2 support by default in 7.0
mdeslaur
Packages built using golang need to be rebuilt once the
vulnerability has been fixed. This CVE entry does not
list packages that need rebuilding outside of the main
repository or the Ubuntu variants with PPA overlays.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
golang-1.9
Launchpad, Ubuntu, Debian
bionic Needed

disco Does not exist

impish Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

lunar Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

golang-1.10
Launchpad, Ubuntu, Debian
bionic Needed

eoan Does not exist

focal Does not exist

impish Does not exist

groovy Does not exist

hirsute Does not exist

xenial Needs triage

jammy Does not exist

kinetic Does not exist

disco Ignored
(end of life)
lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.11
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Ignored
(end of life)
eoan Does not exist

focal Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Patches:
upstream: https://github.com/golang/go/commit/e152b01a468a1c18a290bf9aec52ccea7693c7f2


golang-1.12
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Patches:

upstream: https://github.com/golang/go/commit/7139b45d1410ded14e1e131151fd8dfc435ede6c

golang-1.6
Launchpad, Ubuntu, Debian
xenial Needs triage

impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

bionic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

h2o
Launchpad, Ubuntu, Debian
bionic Needs triage

impish Not vulnerable
(2.2.5+dfsg2-3)
hirsute Not vulnerable
(2.2.5+dfsg2-3)
jammy Not vulnerable
(2.2.5+dfsg2-3)
kinetic Not vulnerable
(2.2.5+dfsg2-3)
disco
Released (2.2.5+dfsg2-2+deb10u1build0.19.04.1)
eoan Not vulnerable
(2.2.5+dfsg2-3)
focal Not vulnerable
(2.2.5+dfsg2-3)
groovy Not vulnerable
(2.2.5+dfsg2-3)
lunar Not vulnerable
(2.2.5+dfsg2-3)
trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Not vulnerable
(2.2.5+dfsg2-3)
golang
Launchpad, Ubuntu, Debian
impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

bionic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

lunar Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

golang-1.7
Launchpad, Ubuntu, Debian
impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

bionic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

lunar Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

golang-1.8
Launchpad, Ubuntu, Debian
impish Does not exist

groovy Does not exist

bionic Needed

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

lunar Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

nginx
Launchpad, Ubuntu, Debian
impish Not vulnerable
(fixed for CVE-2018-16844)
jammy Not vulnerable
(fixed for CVE-2018-16844)
kinetic Not vulnerable
(fixed for CVE-2018-16844)
bionic Not vulnerable
(fixed for CVE-2018-16844)
cosmic Not vulnerable
(fixed for CVE-2018-16844)
disco Not vulnerable
(fixed for CVE-2018-16844)
eoan Not vulnerable
(fixed for CVE-2018-16844)
focal Not vulnerable
(fixed for CVE-2018-16844)
groovy Not vulnerable
(fixed for CVE-2018-16844)
hirsute Not vulnerable
(fixed for CVE-2018-16844)
lunar Not vulnerable
(fixed for CVE-2018-16844)
trusty Not vulnerable
(http2 support not implemented)
upstream Needs triage

xenial Not vulnerable
(fixed for CVE-2018-16844)
mantic Not vulnerable
(fixed for CVE-2018-16844)
trafficserver
Launchpad, Ubuntu, Debian
impish Not vulnerable
(8.0.5+ds-1)
jammy Not vulnerable
(8.0.5+ds-1)
kinetic Not vulnerable
(8.0.5+ds-1)
xenial Needs triage

bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Not vulnerable
(8.0.5+ds-1)
focal Not vulnerable
(8.0.5+ds-1)
groovy Not vulnerable
(8.0.5+ds-1)
hirsute Not vulnerable
(8.0.5+ds-1)
lunar Not vulnerable
(8.0.5+ds-1)
trusty Does not exist

upstream Needs triage

mantic Not vulnerable
(8.0.5+ds-1)
twisted
Launchpad, Ubuntu, Debian
impish
Released (18.9.0-6ubuntu1)
jammy
Released (18.9.0-6ubuntu1)
kinetic
Released (18.9.0-6ubuntu1)
bionic
Released (17.9.0-2ubuntu0.1)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan
Released (18.9.0-3ubuntu1.1)
focal
Released (18.9.0-6ubuntu1)
groovy
Released (18.9.0-6ubuntu1)
hirsute
Released (18.9.0-6ubuntu1)
lunar
Released (18.9.0-6ubuntu1)
trusty Not vulnerable
(http2 support not implemented)
upstream
Released (19.10.0)
xenial Not vulnerable
(http2 support not implemented)
mantic
Released (18.9.0-6ubuntu1)
Patches:


upstream: https://github.com/twisted/twisted/commit/1595d9adc21c580065d1d6036c9611c411990816
netty
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needed)
jammy Needed

impish Ignored
(end of life)
bionic
Released (1:4.1.7-4ubuntu0.1+esm1)
Available with Ubuntu Pro
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needed

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Not vulnerable
(http2 support not implemented)
upstream Needs triage

xenial Not vulnerable
(http2 support not implemented)
mantic Needed

lunar Ignored
(end of life, was needed)

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