Vulnerability identifier: #VU77032

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-2023-20749

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6789
Mobile applications / Mobile firmware & hardware
MT6835
Mobile applications / Mobile firmware & hardware
MT6855
Mobile applications / Mobile firmware & hardware
MT6879
Mobile applications / Mobile firmware & hardware
MT6886
Mobile applications / Mobile firmware & hardware
MT6895
Mobile applications / Mobile firmware & hardware
MT6983
Mobile applications / Mobile firmware & hardware
MT6985
Mobile applications / Mobile firmware & hardware
MT8167
Mobile applications / Mobile firmware & hardware
MT8167S
Mobile applications / Mobile firmware & hardware
MT8168
Mobile applications / Mobile firmware & hardware
MT8175
Mobile applications / Mobile firmware & hardware
MT8195
Mobile applications / Mobile firmware & hardware
MT8321
Mobile applications / Mobile firmware & hardware
MT8362A
Mobile applications / Mobile firmware & hardware
MT8365
Mobile applications / Mobile firmware & hardware
MT8385
Mobile applications / Mobile firmware & hardware
MT8673
Mobile applications / Mobile firmware & hardware
MT8765
Mobile applications / Mobile firmware & hardware
MT8766
Mobile applications / Mobile firmware & hardware
MT8768
Mobile applications / Mobile firmware & hardware
MT8781
Mobile applications / Mobile firmware & hardware
MT8786
Mobile applications / Mobile firmware & hardware
MT8788
Mobile applications / Mobile firmware & hardware
MT8791T
Mobile applications / Mobile firmware & hardware
MT6893
Hardware solutions / Firmware
MT8797
Hardware solutions / Firmware

Vendor: MediaTek

Description

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

The vulnerability exists due to a missing bounds check within swpm. A local privileged application can execute arbitrary code.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT6789: All versions

MT6835: All versions

MT6855: All versions

MT6879: All versions

MT6886: All versions

MT6893: All versions

MT6895: All versions

MT6983: All versions

MT6985: All versions

MT8167: All versions

MT8167S: All versions

MT8168: All versions

MT8175: All versions

MT8195: All versions

MT8321: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8673: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8781: All versions

MT8786: All versions

MT8788: All versions

MT8791T: All versions

MT8797: All versions

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