Vulnerability identifier: #VU72981

Vulnerability risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0668

CWE-ID: CWE-703

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6873
Hardware solutions / Firmware
MT6875
Hardware solutions / Firmware
MT6877
Hardware solutions / Firmware
MT6883
Hardware solutions / Firmware
MT6885
Hardware solutions / Firmware
MT6889
Hardware solutions / Firmware
MT6891
Hardware solutions / Firmware
MT6893
Hardware solutions / Firmware
MT9636
Mobile applications / Mobile firmware & hardware
MT9638
Mobile applications / Mobile firmware & hardware
MT9639
Mobile applications / Mobile firmware & hardware
MT9650
Mobile applications / Mobile firmware & hardware
MT9652
Mobile applications / Mobile firmware & hardware
MT9669
Mobile applications / Mobile firmware & hardware
MT9686
Mobile applications / Mobile firmware & hardware
MT9970
Mobile applications / Mobile firmware & hardware
MT9980
Mobile applications / Mobile firmware & hardware
MT9981
Mobile applications / Mobile firmware & hardware

Vendor: MediaTek

Description

The vulnerability allows a local privileged application to execute arbitrary code.

The vulnerability exists due to incorrect error handling within apusys. A local privileged application can execute arbitrary code.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6883: All versions

MT6885: All versions

MT6889: All versions

MT6891: All versions

MT6893: All versions

MT9636: All versions

MT9638: All versions

MT9639: All versions

MT9650: All versions

MT9652: All versions

MT9669: All versions

MT9686: All versions

MT9970: All versions

MT9980: All versions

MT9981: All versions

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External links
http://corp.mediatek.com/product-security-bulletin/November-2021

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.