CVE-2021-41524
Fixed in a distro release EPSS 25%
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.
Products: Apache Software Foundation Apache HTTP Server
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.11 | apache2 | 2.4.50-r0 |
| Alpine 3.12 | apache2 | 2.4.50-r0 |
| Alpine 3.13 | apache2 | 2.4.50-r0 |
| Alpine 3.14 | apache2 | 2.4.50-r0 |
| Alpine 3.15 | apache2 | 2.4.50-r0 |
| Alpine 3.16 | apache2 | 2.4.50-r0 |
| Alpine 3.17 | apache2 | 2.4.50-r0 |
| Alpine 3.18 | apache2 | 2.4.50-r0 |
| Alpine 3.19 | apache2 | 2.4.50-r0 |
| Alpine 3.20 | apache2 | 2.4.50-r0 |
| Alpine 3.21 | apache2 | 2.4.50-r0 |
| Alpine 3.22 | apache2 | 2.4.50-r0 |
| Alpine 3.23 | apache2 | 2.4.50-r0 |
| Alpine 3.24 | apache2 | 2.4.50-r0 |
| Arch Linux | apache | 2.4.50-1 |
| Debian 12 | apache2 | 2.4.50-1 |
| Debian 13 | apache2 | 2.4.50-1 |
| Debian 14 | apache2 | 2.4.50-1 |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-debuginfo | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-debuginfo | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-devel | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-devel | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-manual | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-manual | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-selinux | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-selinux | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-tools | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-tools | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-httpd-tools-debuginfo | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ldap | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ldap | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ldap-debuginfo | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_proxy_html | 1:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_proxy_html | 1:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_proxy_html-debuginfo | 1:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_session | 0:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_session | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_session-debuginfo | 0:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ssl | 1:2.4.51-28.el7jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ssl | 1:2.4.51-28.el8jbcs |
| Red Hat jboss core services 1 | jbcs-httpd24-mod_ssl-debuginfo | 1:2.4.51-28.el8jbcs |