Read the docs
TI-2024-24173 Aliases CVE-2024-36387GHSA-463r-p989-2f9j

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

Priority LOW 28CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01715 77th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache HTTP Server2.4.55 – 2.4.59—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.4.55 – 2.4.59 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*2.4.55 – 2.4.59VulnerableApache
cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:*9VulnerableNetApp
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.4.55 – 2.4.59 Vulnerable ·Apache
  • cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·NetApp

Remediation

Red Hat 3 advisories

  • RHSA-2025:3452 Released 2025-04-02 · Red Hat rating Low
    Red Hat JBoss Core Services Apache HTTP Server 2.4.62 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd-2.4.62-5.el7jbcs, jbcs-httpd24-httpd-devel-2.4.62-5.el7jbcs, jbcs-httpd24-httpd-manual-2.4.62-5.el7jbcs +12
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd-2.4.62-5.el8jbcs, jbcs-httpd24-httpd-devel-2.4.62-5.el8jbcs, jbcs-httpd24-httpd-manual-2.4.62-5.el8jbcs +7
  • RHSA-2025:3453 Released 2025-04-02 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.62 security update
    • Red Hat JBoss Core Services 2.4.62
  • RHSA-2024:8680 Released 2024-10-31 · Red Hat rating Low
    mod_http2 security update
    • Red Hat Enterprise Linux AppStream (v. 9) mod_http2-2.0.26-2.el9_4.1

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:8680
Red Hat JBoss Core Services 2.4.62Fixed RHSA-2025:3453
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2025:3452
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2025:3452
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat JBoss Core Services on RHEL 7 Server
  • Red Hat JBoss Core Services on RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-36387
  2. 2026-10-03 Alias added: GHSA-463r-p989-2f9j
  3. 2026-10-09 Fix available: RHSA-2025:3453 · Red Hat
  4. 2026-10-21 Fix available: Red Hat JBoss Core Services 2.4.62 · Red Hat

References

Advisory 3

  • TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
See all 349 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences