#VU67841 Permissions, Privileges, and Access Controls in MediaTek products - CVE-2022-26473

Vulnerability identifier: #VU67841

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26473

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6789
Mobile applications / Mobile firmware & hardware
MT6855
Mobile applications / Mobile firmware & hardware
MT6879
Mobile applications / Mobile firmware & hardware
MT6895
Mobile applications / Mobile firmware & hardware
MT6983
Mobile applications / Mobile firmware & hardware
MT8168
Mobile applications / Mobile firmware & hardware
MT8365
Mobile applications / Mobile firmware & hardware
MT8695
Mobile applications / Mobile firmware & hardware
MT8696
Mobile applications / Mobile firmware & hardware
MT8798
Mobile applications / Mobile firmware & hardware

Vendor: MediaTek

Description

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to improper locking within the vdec fmt component. A local application with System execution permissions can execute arbitrary code.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MT6789: All versions

MT6855: All versions

MT6879: All versions

MT6895: All versions

MT6983: All versions

MT8168: All versions

MT8365: All versions

MT8695: All versions

MT8696: All versions

MT8798: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/October-2022

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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.