CVE-2021-41524
HIGHApache HTTP Server 2.4.49 - Denial of Service via HTTP/2 Request Processing
Title source: llmDescription
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.
References (8)
Core 8
Core References
Vendor Advisory x_refsource_misc
https://httpd.apache.org/security/vulnerabilities_24.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/10/05/1
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/
Third Party Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2022.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20211029-0009/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202208-20
Scores
CVSS v3
7.5
EPSS
0.0396
EPSS Percentile
88.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (7)
apache/http_server
2.4.49
fedoraproject/fedora
34
fedoraproject/fedora
35
netapp/cloud_backup
oracle/instantis_enterprisetrack
17.1
oracle/instantis_enterprisetrack
17.2
oracle/instantis_enterprisetrack
17.3
Published
Oct 05, 2021
Tracked Since
Feb 18, 2026