#VU72803 Improper Input Validation in MediaTek products - CVE-2023-20645

Vulnerability identifier: #VU72803

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20645

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6739
Mobile applications / Mobile firmware & hardware
MT6761
Mobile applications / Mobile firmware & hardware
MT6762
Mobile applications / Mobile firmware & hardware
MT6763
Mobile applications / Mobile firmware & hardware
MT6765
Mobile applications / Mobile firmware & hardware
MT6769
Mobile applications / Mobile firmware & hardware
MT6771
Mobile applications / Mobile firmware & hardware
MT6789
Mobile applications / Mobile firmware & hardware
MT6879
Mobile applications / Mobile firmware & hardware
MT6895
Mobile applications / Mobile firmware & hardware
MT6983
Mobile applications / Mobile firmware & hardware
MT8791
Mobile applications / Mobile firmware & hardware
MT8791T
Mobile applications / Mobile firmware & hardware
MT6779
Hardware solutions / Firmware
MT6785
Hardware solutions / Firmware
MT6873
Hardware solutions / Firmware
MT6875
Hardware solutions / Firmware
MT6877
Hardware solutions / Firmware
MT8797
Hardware solutions / Firmware

Vendor: MediaTek

Description

The vulnerability allows a local privileged application to gain access to sensitive information.

The vulnerability exists due to a missing bounds check within ril. A local privileged application can gain access to sensitive information.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT6739: All versions

MT6761: All versions

MT6762: All versions

MT6763: All versions

MT6765: All versions

MT6769: All versions

MT6771: All versions

MT6779: All versions

MT6785: All versions

MT6789: All versions

MT6873: All versions

MT6875: All versions

MT6877: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

MT8791: All versions

MT8791T: All versions

MT8797: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/March-2023

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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.