critical9.8
CVE-2019-15027
The MediaTek Embedded Multimedia Card (eMMC) subsystem for Android on MT65xx, MT66xx, and MT8163 SoC devices allows attackers to execute arbitrary commands as …
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mediatek | Mt8163 Firmware | All versions |
| Mediatek | Mt6625 Firmware | All versions |
| Mediatek | Mt6577 Firmware | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- https://dojo.bullguard.com/dojo-by-bullguard/blog/gaining-rooting-primitives-for-android-mediatek-chips/
- https://github.com/andr3jx/MTK6577/blob/238012ebf18e3751397884d1742ff7ab6417e80d/mediatek/platform/mt6577/external/meta/emmc/meta_clr_emmc.c#L302-L305
- https://dojo.bullguard.com/dojo-by-bullguard/blog/gaining-rooting-primitives-for-android-mediatek-chips/
- https://github.com/andr3jx/MTK6577/blob/238012ebf18e3751397884d1742ff7ab6417e80d/mediatek/platform/mt6577/external/meta/emmc/meta_clr_emmc.c#L302-L305