Write-what-where Condition in MediaTek products - CVE-2023-20656

Vulnerability identifier: #VU74512

CSH Severity: Low

CVSS v4: 8.4 [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]

CVE-ID: CVE-2023-20656

CWE-ID: CWE-123

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a logic error within geniezone. A local privileged application can execute arbitrary code.

MT8781
MT6895
MT6983
MT8321
MT8385
MT8765
MT8766
MT8768
MT8771
MT8786
MT8788
MT8789
MT8791T
MT8795T
MT8798
MT6765
MT6879
MT6855
MT6833
MT6789
MT6771
MT6768
Samsung Mobile Firmware
MT6893
MT8797
MT6889
MT6885
MT6883
MT6877
MT6873
MT6853
MT6785
MT6781
MT6779
Google Android

Install security update from vendor's website.

Samsung Mobile Firmware - update to SMR-MAY-2023
Google Android - addressed in versions 11 2023-04-05, 12L 2023-04-05, 12 2023-04-05, 13 2023-04-05

• https://corp.mediatek.com/product-security-bulletin/April-2023

• Multiple vulnerabilities in MediaTek chipsets
• Multiple vulnerabilities in Google Android
• Multiple vulnerabilities in Samsung Mobile Firmware