#VU72963 Memory corruption in MediaTek products - CVE-2021-0634

Vulnerability identifier: #VU72963

Vulnerability risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-0634

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6735
Mobile applications / Mobile firmware & hardware
MT6739
Mobile applications / Mobile firmware & hardware
MT6761
Mobile applications / Mobile firmware & hardware
MT6765
Mobile applications / Mobile firmware & hardware
MT6771
Mobile applications / Mobile firmware & hardware
MT8168
Mobile applications / Mobile firmware & hardware
MT8175
Mobile applications / Mobile firmware & hardware
MT8365
Mobile applications / Mobile firmware & hardware
MT8788
Mobile applications / Mobile firmware & hardware
MT6779
Hardware solutions / Firmware
MT6785
Hardware solutions / Firmware

Vendor: MediaTek

Description

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

The vulnerability exists due to uninitialized data within display driver. A local privileged application can execute arbitrary code.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT6735: All versions

MT6739: All versions

MT6761: All versions

MT6765: All versions

MT6771: All versions

MT6779: All versions

MT6785: All versions

MT8168: All versions

MT8175: All versions

MT8365: All versions

MT8788: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/October-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.