CVE-2021-41524

Published: Oct 5, 2021Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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.

Affected (7)

Products: Apache: Http Server · Fedoraproject: Fedora · Oracle: Instantis Enterprisetrack · +1 more

Show all products

Apache: Http Server · Fedoraproject: Fedora · Oracle: Instantis Enterprisetrack · Netapp: Cloud Backup

1 product

1 product

1 product

Instantis Enterprisetrack

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Apache Http Server	Version 2.4.49

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 34
Fedoraproject Fedora	Version 35

Configuration C

3 vulnerable

Vulnerable Software	Affected Versions
Oracle Instantis Enterprisetrack	Version 17.1
Oracle Instantis Enterprisetrack	Version 17.2
Oracle Instantis Enterprisetrack	Version 17.3

Configuration D

1 vulnerable

Vulnerable Software	Affected Versions
Netapp Cloud Backup	All versions

Related CWEs

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (16)

http://www.openwall.com/lists/oss-security/2021/10/05/1

Source: security@apache.org

Mailing ListThird Party Advisory

https://httpd.apache.org/security/vulnerabilities_24.html

Source: security@apache.org

Vendor Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/

Source: security@apache.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/

Source: security@apache.org

https://security.gentoo.org/glsa/202208-20

Source: security@apache.org

Third Party Advisory

https://security.netapp.com/advisory/ntap-20211029-0009/

Source: security@apache.org

Third Party Advisory

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ

Source: security@apache.org

Third Party Advisory

https://www.oracle.com/security-alerts/cpujan2022.html

Source: security@apache.org

PatchThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/05/1

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://httpd.apache.org/security/vulnerabilities_24.html

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/

Source: af854a3a-2127-422b-91ae-364da2661108

https://security.gentoo.org/glsa/202208-20

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://security.netapp.com/advisory/ntap-20211029-0009/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.oracle.com/security-alerts/cpujan2022.html

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

Timeline

No history available yet.