In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Http_server | Apache | 2.4.17 (including) | 2.4.38 (including) |
| JBoss Core Services Apache HTTP Server 2.4.29 SP2 | RedHat | httpd | * |
| JBoss Core Services Apache HTTP Server 2.4.29 SP2 | RedHat | * | |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-httpd-0:2.4.29-40.jbcs.el6 | * |
| JBoss Core Services on RHEL 6 | RedHat | jbcs-httpd24-openssl-1:1.0.2n-15.jbcs.el6 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-httpd-0:2.4.29-40.jbcs.el7 | * |
| JBoss Core Services on RHEL 7 | RedHat | jbcs-httpd24-openssl-1:1.0.2n-15.jbcs.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | httpd:2.4-8000020190405071959.55190bc5 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | httpd24-httpd-0:2.4.34-7.el6.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | httpd24-httpd-0:2.4.34-7.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | httpd24-mod_auth_mellon-0:0.13.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | httpd24-httpd-0:2.4.34-7.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | httpd24-mod_auth_mellon-0:0.13.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | httpd24-httpd-0:2.4.34-7.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | httpd24-mod_auth_mellon-0:0.13.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | httpd24-httpd-0:2.4.34-7.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | httpd24-mod_auth_mellon-0:0.13.1-2.el7.1 | * |
| Apache2 | Ubuntu | bionic | * |
| Apache2 | Ubuntu | cosmic | * |
| Apache2 | Ubuntu | devel | * |
| Apache2 | Ubuntu | esm-infra/bionic | * |
| Apache2 | Ubuntu | esm-infra/xenial | * |
| Apache2 | Ubuntu | xenial | * |