An incorrect handling of a special element in Busyboxs ash applet leads to denial of service when processing a crafted shell command, due to the shell mistaking specific characters for reserved characters. This may be used for DoS under rare conditions of filtered command input.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Busybox | Busybox | 1.33.1 (including) | 1.33.1 (including) |
| Busybox | Ubuntu | trusty | * |
| Busybox | Ubuntu | upstream | * |
| Busybox | Ubuntu | xenial | * |