nginx before versions 1.15.6, 1.14.1 has a vulnerability in the ngx_http_mp4_module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted mp4 file. The issue only affects nginx if it is built with the ngx_http_mp4_module (the module is not built by default) and the .mp4. directive is used in the configuration file. Further, the attack is only possible if an attacker is able to trigger processing of a specially crafted mp4 file with the ngx_http_mp4_module.
The product does not properly control the allocation and maintenance of a limited resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nginx | F5 | 1.0.7 (including) | 1.0.15 (including) |
| Nginx | F5 | 1.1.3 (including) | 1.15.5 (including) |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-nginx18-nginx-1:1.8.1-1.el6.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-nginx110-nginx-1:1.10.2-8.el6.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-nginx18-nginx-1:1.8.1-1.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-nginx110-nginx-1:1.10.2-8.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-nginx112-nginx-1:1.12.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-nginx114-nginx-1:1.14.1-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-nginx18-nginx-1:1.8.1-1.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-nginx110-nginx-1:1.10.2-8.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-nginx112-nginx-1:1.12.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | RedHat | rh-nginx114-nginx-1:1.14.1-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-nginx18-nginx-1:1.8.1-1.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-nginx110-nginx-1:1.10.2-8.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-nginx112-nginx-1:1.12.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | RedHat | rh-nginx114-nginx-1:1.14.1-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-nginx18-nginx-1:1.8.1-1.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-nginx110-nginx-1:1.10.2-8.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-nginx112-nginx-1:1.12.1-2.el7.1 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | RedHat | rh-nginx114-nginx-1:1.14.1-1.el7 | * |
| Nginx | Ubuntu | bionic | * |
| Nginx | Ubuntu | cosmic | * |
| Nginx | Ubuntu | devel | * |
| Nginx | Ubuntu | esm-infra-legacy/trusty | * |
| Nginx | Ubuntu | esm-infra/bionic | * |
| Nginx | Ubuntu | esm-infra/xenial | * |
| Nginx | Ubuntu | trusty | * |
| Nginx | Ubuntu | trusty/esm | * |
| Nginx | Ubuntu | upstream | * |
| Nginx | Ubuntu | xenial | * |
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.