#VU66957 Out-of-bounds write in MediaTek products - CVE-2022-26447

Vulnerability identifier: #VU66957

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-26447

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MT6580
Mobile applications / Mobile firmware & hardware
MT6735
Mobile applications / Mobile firmware & hardware
MT6737
Mobile applications / Mobile firmware & hardware
MT6739
Mobile applications / Mobile firmware & hardware
MT6750S
Mobile applications / Mobile firmware & hardware
MT6753
Mobile applications / Mobile firmware & hardware
MT6755S
Mobile applications / Mobile firmware & hardware
MT6757
Mobile applications / Mobile firmware & hardware
MT6757C
Mobile applications / Mobile firmware & hardware
MT6757CD
Mobile applications / Mobile firmware & hardware
MT6757CH
Mobile applications / Mobile firmware & hardware
MT6763
Mobile applications / Mobile firmware & hardware
MT6771
Mobile applications / Mobile firmware & hardware
MT8163
Mobile applications / Mobile firmware & hardware
MT8167
Mobile applications / Mobile firmware & hardware
MT8167S
Mobile applications / Mobile firmware & hardware
MT8173
Mobile applications / Mobile firmware & hardware
MT8183
Mobile applications / Mobile firmware & hardware
MT8321
Mobile applications / Mobile firmware & hardware
MT8362A
Mobile applications / Mobile firmware & hardware
MT8385
Mobile applications / Mobile firmware & hardware
MT8518
Mobile applications / Mobile firmware & hardware
MT8532
Mobile applications / Mobile firmware & hardware
MT8765
Mobile applications / Mobile firmware & hardware
MT8788
Mobile applications / Mobile firmware & hardware

Vendor: MediaTek

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in BT firmware. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MT6580: All versions

MT6735: All versions

MT6737: All versions

MT6739: All versions

MT6750S: All versions

MT6753: All versions

MT6755S: All versions

MT6757: All versions

MT6757C: All versions

MT6757CD: All versions

MT6757CH: All versions

MT6763: All versions

MT6771: All versions

MT8163: All versions

MT8167: All versions

MT8167S: All versions

MT8173: All versions

MT8183: All versions

MT8321: All versions

MT8362A: All versions

MT8385: All versions

MT8518: All versions

MT8532: All versions

MT8765: All versions

MT8788: All versions

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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.