PT-2021-22697 · Google · Android Kernel

Published 2021-12-15 · Updated 2023-02-03 · CVE-2021-39653

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions: Android kernel

Description: The issue allows for local escalation of privilege due to a missing warning to the user, enabling a possible way to boot with a hidden debug policy. This could be exploited by preparing the device, hiding the warning, and passing the phone to a new user, with no additional execution privileges needed. User interaction is not required for exploitation.

Recommendations: For Android kernel, consider implementing a warning to the user when booting with a hidden debug policy to prevent local escalation of privilege. As a temporary workaround, restrict access to the device to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2021-39653

Affected Products

Android Kernel

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2021-39653 · Security Note
• https://source.android.com/security/bulletin/pixel/2022-06-01 · Vendor Advisory