#VU67544 Uncontrolled Memory Allocation in mTower - CVE-2022-40762

Vulnerability identifier: #VU67544

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40762

CWE-ID: CWE-789

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
mTower
Mobile applications / Apps for mobile phones

Vendor: Samsung

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a memory allocation with excessive size value in the TEE_Realloc function. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

mTower: 0.1.0 - 0.3.0

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External links
https://github.com/Samsung/mTower/issues/82
https://github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/tee/lib/libutee/tee_api.c#L319

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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.