On Verizon 5G Home LVSKIHP InDoorUnit (IDU) and OutDoorUnit (ODU) devices, the CRTC and ODU RPC endpoints provide a means of provisioning a firmware update for the device via crtc_fw_upgrade or crtcfwimage. The URL provided is not validated, and thus allows for arbitrary file upload to the device. This occurs in /lib/lua/luci/crtc.lua (IDU) and /lib/functions/wnc_jsonsh/ (ODU).

Source: CVE-2022-28372

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