vulnerability
Apache HTTPD: null pointer dereference in h2 fuzzing (CVE-2021-41524)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Oct 5, 2021 | Dec 22, 2021 | Jul 2, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Oct 5, 2021
Added
Dec 22, 2021
Modified
Jul 2, 2025
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.
Solution
apache-httpd-upgrade-latest
References
- URL-http://www.openwall.com/lists/oss-security/2021/10/05/1
- URL-https://httpd.apache.org/security/vulnerabilities_24.html
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/
- URL-https://security.gentoo.org/glsa/202208-20
- URL-https://security.netapp.com/advisory/ntap-20211029-0009/
- URL-https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ
- URL-https://www.oracle.com/security-alerts/cpujan2022.html
- CVE-2021-41524
- https://attackerkb.com/topics/CVE-2021-41524
- CWE-476
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