| Título | GL.iNet MT3000 4.4.5 Command Injection |
|---|
| Descrição | An unauthenticated command injection vulnerability exists in the /cgi-bin/glc endpoint. The modem.so shared object exports a set_upgrade function that extracts the firmware_upload parameter from the JSON request body and passes it into sprintf(cmd, "/usr/bin/modem_upgrade_check %s %s %s %s %s %s", firmware_upload, modem_url, target_version, hash_type, current_version, hash_value) followed by fork_exec(cmd) (which invokes /bin/sh -c). The modem-existence gate (find_modem_by_bus) checks a different JSON field (modem_url) and does not validate firmware_upload. On devices with a real modem, an attacker can inject &(cmd);# to execute arbitrary commands as root without authentication. |
|---|
| Fonte | ⚠️ https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/modem_set_upgrade_glc_rce |
|---|
| Utilizador | Strforexc2 (UID 98838) |
|---|
| Submissão | 08/06/2026 15h23 (há 2 meses) |
|---|
| Moderação | 03/08/2026 17h50 (2 months later) |
|---|
| Estado | Aceite |
|---|
| Entrada VulDB | 385611 [GL.iNet GL-MT3000 até 4.4.5 modem.so /cgi-bin/glc set_upgrade Elevação de Privilégios] |
|---|
| Pontos | 20 |
|---|