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Fencer Vulns
medium 5.4

CVE-2024-36387 json

Apache HTTP Server: DoS by Null pointer in websocket over HTTP/2

published 2024-07-01 2 y ago modified 2026-09-08 2 mo ago also BIT-apache-2024-36387 , EUVD-2024-36338

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.

Patch / fix

  • bitnami apache 2.4.60
  • apache http_server 2.4.60
  • apache2 Debian 12 2.4.61-1~deb12u1
  • apache2 Debian 14, Debian 13 2.4.60-1

debian advisories DEBIAN-CVE-2024-36387

  • apache2 Ubuntu 20.04 LTS 2.4.41-4ubuntu3.19
  • apache2 Ubuntu 22.04 LTS 2.4.52-1ubuntu4.10
  • apache2 Ubuntu 24.04 LTS 2.4.58-1ubuntu8.2

ubuntu advisories UBUNTU-CVE-2024-36387

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • jbcs-httpd24-httpd jboss core services 1 2.4.62-5.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.62-5.el8jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.62-5.el7jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.62-5.el8jbcs
  • jbcs-httpd24-openssl jboss core services 1 1:1.1.1k-19.el7jbcs
  • jbcs-httpd24-mod_ldap jboss core services 1 2.4.62-5.el7jbcs
  • jbcs-httpd24-mod_ldap jboss core services 1 2.4.62-5.el8jbcs
  • jbcs-httpd24-mod_http2 jboss core services 1 2.0.29-3.el7jbcs

red hat advisories RHSA-2025:3452RHSA-2024:8680

  • apache2 SLE Module for Package Hub 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.18.1
  • apache2-event SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.18.1
  • apache2-utils SLE Module for Server Applications 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.18.1
  • apache2-manual openSUSE Leap 15.6 2.4.58-150600.5.18.1
  • apache2-worker SLE Module for Server Applications 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.18.1
  • apache2-prefork SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.18.1

suse advisories SUSE-SU-2024:2597-1

  • apache2 openSUSE Tumbleweed 2.4.61-1.1

opensuse advisories openSUSE-SU-2024:14116-1

  • mod_http2 AlmaLinux 9 2.0.26-2.el9_4.1

almalinux advisories ALSA-2024:8680

  • mod_http2 Rocky Linux 9 2.0.26-2.el9_4.1

rocky linux advisories RLSA-2024:8680

  • apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 2.4.60-r0

alpine advisories ALPINE-CVE-2024-36387

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • httpd CBL-Mariner 2.0, Azure Linux 3.0 2.4.61-1

azure linux advisories AZL-43089AZL-43119

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-36387 updated cvss 3.7

mod_http2: DoS by null pointer in websocket over HTTP/2

  • Red Hat Enterprise Linux AppStream (v. 9) mod_http2 2.0.26-2.el9_4.1
    fixed: vendor fix RHSA-2024:8680
  • Red Hat JBoss Core Services 2.4.62
    fixed: vendor fix RHSA-2025:3453
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-mod_http2 2.0.29-3.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-mod_http2 2.0.29-3.el8jbcs
    fixed: vendor fix RHSA-2025:3452
  • Red Hat Enterprise Linux 8 mod_http2 Red Hat Enterprise Linux 10 mod_http2 Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr 1.7.5-3.el7jbcs, jbcs-httpd24-curl 8.11.0-2.el7jbcs, jbcs-httpd24-brotli 1.1.0-5.el7jbcs, jbcs-httpd24-httpd 2.4.62-5.el7jbcs, jbcs-httpd24-jansson 2.14-4.el7jbcs, jbcs-httpd24-mod_md 2.4.28-9.el7jbcs, +26 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-apr 1.7.5-3.el8jbcs, jbcs-httpd24-httpd 2.4.62-5.el8jbcs, jbcs-httpd24-mod_md 2.4.28-9.el8jbcs, jbcs-httpd24-apr-util 1.6.3-2.el8jbcs, jbcs-httpd24-mod_ssl 2.4.62-5.el8jbcs, jbcs-httpd24-mod_ldap 2.4.62-5.el8jbcs, +16 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Affected packages

ecosystem package affected fixed in
bitnami apache
>=2.4.55, <2.4.60
2.4.60

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.