#VU74430 Improper input validation in Google Android - CVE-2021-39627

Vulnerability identifier: #VU74430

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-39627

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

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

Vendor: Google

Description

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to improper input validation within the System component. A local application can execute arbitrary code.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

Google Android: before 9, 10, 11, 12, 9, 9

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External links
https://android.googlesource.com/platform/packages/apps/Dialer/+/9c452d9f25d8fb41fd3ec627293a2481fde778d4
https://source.android.com/docs/security/bulletin/2022-01-01

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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.