CVE Database›Document archive›CVE-2021-41524

CVE-2021-41524

httpd: NULL pointer dereference via crafted request during HTTP/2 request processing

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · October 5, 2021

Updated · September 21, 2026

Description

While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.

Statement

This issue only affects Apache HTTP Server 2.4.49 and Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP9, earlier versions are not affected. Therefore this issue does not affect the other versions of Apache HTTP Server shipped with Red Hat products.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference