PT-2022-10985 · Google · Android

Published 2022-03-01 · Updated 2022-03-23 · CVE-2021-39704

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Android versions Android-10 through Android-12

Description A permissions bypass issue in the deleteNotificationChannelGroup function of NotificationManagerService.java allows a foreground service to run without user notification. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not required for exploitation.

Recommendations For Android versions Android-10 through Android-12, consider restricting the use of the deleteNotificationChannelGroup function until a patch is available. As a temporary workaround, review and restrict foreground service permissions to minimize the risk of exploitation.

Fix

Improper Preservation of Permissions

Weakness Enumeration

CWE-281

Related Identifiers

ASB-A-209965481

CVE-2021-39704

Affected Products

Android

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-39704 · Security Note
• https://osv.dev/vulnerability/ASB-A-209965481 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39704 · Vendor Advisory
• https://source.android.com/security/bulletin/2022-03-01 · Vendor Advisory
• https://android.googlesource.com/platform/frameworks/base/+/b925955552885a049fcbff978415612dad3e447d · Note