#VU69229 Permissions, Privileges, and Access Controls in Samsung Mobile Firmware - CVE-2021-25344

Vulnerability identifier: #VU69229

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-25344

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Samsung Mobile Firmware
Mobile applications / Mobile firmware & hardware

Vendor: Samsung

Description

The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to missing permission check in knox_custom service. A local application can obtain the device’s serial number without permission.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Samsung Mobile Firmware: before SMR-MAR-2021

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External links
https://security.samsungmobile.com/securityUpdate.smsb#SMR-MAR-2021

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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.