#VU76543 Improper access control in Samsung Mobile Firmware - CVE-2023-21491

Vulnerability identifier: #VU76543

Vulnerability risk: Low

CVSSv4.0: 5.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-21491

CWE-ID: CWE-284

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 compromise the affected device.

The vulnerability exists due to improper access restrictions in ThemeManager. A local application can write arbitrary files with system privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Samsung Mobile Firmware: before SMR-MAY-2023

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External links
https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=05

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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.