#VU65907 Out-of-bounds write in MT2621 and MT2625 - CVE-2022-26437

Vulnerability identifier: #VU65907

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-26437

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MT2621
Mobile applications / Mobile firmware & hardware
MT2625
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 within httpclient from NBIOT SDK. A remote attacker can send specially crafted HTTP response, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MT2621: All versions

MT2625: All versions

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