CVE-2019-15027

CRITICAL

MediaTek MT65xx MT66xx MT8163 eMMC Subsystem - OS Command Injection via Filename in Meta Mode Boot

Title source: llm

Description

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.

References (2)

Core 2

Core References

Exploit, Third Party Advisory x_refsource_misc

https://dojo.bullguard.com/dojo-by-bullguard/blog/gaining-rooting-primitives-for-android-mediatek-chips/

Third Party Advisory x_refsource_misc

https://github.com/andr3jx/MTK6577/blob/238012ebf18e3751397884d1742ff7ab6417e80d/mediatek/platform/mt6577/external/meta/emmc/meta_clr_emmc.c#L302-L305

View Writeup ZIP pw:eip

Scores

CVSS v3 9.8

EPSS 0.0236

EPSS Percentile 85.1%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-78

Status published

Products (3)

mediatek/mt6577_firmware

mediatek/mt6625_firmware

mediatek/mt8163_firmware

Published Aug 14, 2019

Tracked Since Feb 18, 2026