Arbitrary Command Execution Vulnerability in MediaTek eMMC Subsystem for Android on MT65xx, MT66xx, and MT8163 SoC Devices

CVE-2019-15027 · HIGH Severity

AV:N/AC:L/AU:N/C:C/I:C/A:C

The MediaTek Embedded Multimedia Card (eMMC) subsystem for Android on MT65xx, MT66xx, and MT8163 SoC devices allows attackers to execute arbitrary commands as root via shell metacharacters in a filename under /data, because clear_emmc_nomedia_entry in platform/mt6577/external/meta/emmc/meta_clr_emmc.c invokes 'system("/system/bin/rm -r /data/' followed by this filename upon an eMMC clearance from a Meta Mode boot. NOTE: compromise of Fire OS on the Amazon Echo Dot would require a second hypothetical vulnerability that allows creation of the required file under /data.

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