Vulnerability identifier: #VU28278

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0105

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Google Android
Operating systems & Components / Operating system

Vendor: Google

Description

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

The vulnerability exists due to a missing permission check in "onKeyguardVisibilityChanged" of "key_store_service.cpp" within the System functionality. A local user can gain elevated privileges on the target system, allowing apps to use keyguard-bound keys when the screen is locked.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Google Android: 9.0, 10

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External links
http://source.android.com/security/bulletin/2020-05-01
http://android.googlesource.com/platform/system/security/+/1642dc003964aed54724d17d840f883f0537cebd

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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.