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CVE-2023-44487

Published: 10 October 2023

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

Notes

AuthorNote
mdeslaur
The nginx developers do not consider nginx to be affected by
this issue due to the default configuration restricting the
number of requests per connectiong (keepalive_requests). They
did provide a patch to harden nginx even further in environments
where the default are substantially modified.

haproxy was fixed in 2018 by the commit listed below

Debian's tomcat9 update caused a regression, investigate before
fixing tomcat packages.
ccdm94
see https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html
for more information on nginx developer's position regarding this CVE.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
haproxy
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Not vulnerable
(2.0.31-0ubuntu0.2)
jammy Not vulnerable
(2.4.22-0ubuntu0.22.04.2)
lunar Not vulnerable
(2.6.9-1ubuntu1.1)
upstream Needs triage

mantic Not vulnerable
(2.6.15-1ubuntu2)
Patches:
upstream: http://git.haproxy.org/?p=haproxy.git;a=commit;h=f210191dc






nginx
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable

jammy Not vulnerable

mantic Not vulnerable

lunar Not vulnerable

trusty Not vulnerable

upstream Not vulnerable

xenial Not vulnerable

Patches:



upstream: https://github.com/nginx/nginx/commit/6ceef192e7af1c507826ac38a2d43f08bf265fb9



tomcat10
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Ignored
(end of standard support)
focal Does not exist

jammy Does not exist

lunar Needs triage

upstream
Released (10.1.14)
mantic Needs triage

Patches:




upstream: https://github.com/apache/tomcat/commit/76bb4bfbfeae827dce896f650655bbf6e251ed49


tomcat9
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream
Released (9.0.81)
mantic Needs triage

Patches:





upstream: https://github.com/apache/tomcat/commit/6d1a9fd6642387969e4410b9989c85856b74917a

trafficserver
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream Needs triage

mantic Needs triage

Patches:






upstream: https://github.com/apache/trafficserver/commit/b28ad74f117307e8de206f1de70c3fa716f90682
h2o
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream Needs triage

mantic Needs triage

tomcat8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Needs triage

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream
Released (8.5.94)
mantic Does not exist

dotnet6
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy
Released (6.0.123-0ubuntu1~22.04.1)
lunar
Released (6.0.123-0ubuntu1~23.04.1)
upstream
Released (6.0.23)
mantic
Released (6.0.123-0ubuntu1)
dotnet7
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy
Released (7.0.112-0ubuntu1~22.04.1)
lunar
Released (7.0.112-0ubuntu1~23.04.1)
upstream
Released (7.0.12)
mantic
Released (7.0.112-0ubuntu1)
dotnet8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream
Released (8.0.0-rc.2)
mantic
Released (8.0.100-8.0.0~rc2-0ubuntu1)
nghttp2
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal
Released (1.40.0-1ubuntu0.2)
jammy
Released (1.43.0-1ubuntu0.1)
upstream Needs triage

mantic
Released (1.55.1-1ubuntu0.1)
lunar
Released (1.52.0-1ubuntu0.1)
Patches:

upstream: https://github.com/nghttp2/nghttp2/pull/1961
upstream: https://github.com/nghttp2/nghttp2/commit/72b4af6143681f528f1d237b21a9a7aee1738832




golang
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.6
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Needs triage

bionic Does not exist

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

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

xenial Does not exist

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.9
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.10
Launchpad, Ubuntu, Debian
trusty Needs triage

xenial Needs triage

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.14
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.16
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Needs triage

jammy Does not exist

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.17
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needs triage

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.18
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Does not exist

upstream Needs triage

mantic Does not exist

golang-1.19
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Does not exist

lunar Needs triage

upstream Needs triage

mantic Does not exist

golang-1.20
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream Needs triage

mantic Needs triage

golang-1.21
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream Needs triage

mantic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

nodejs
Launchpad, Ubuntu, Debian
trusty Needs triage

xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

mantic Needs triage

upstream 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