Privilege escalation in Samsung Galaxy S21

1) Exposed dangerous method or function

EUVDB-ID: #VU61916

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the Web Bridge WebView exposes a JavaScript interface, which leads to security restrictions bypass and privilege escalation.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Galaxy S21: All versions

External links

http://www.zerodayinitiative.com/advisories/ZDI-22-547/

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.