PT-2021-13386 · Google · Android

Published 2021-12-15 · Updated 2022-10-28 · CVE-2021-0981

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-11 Android version Android-12

Description The issue is related to improper input validation in the enqueueNotificationInternal method of NotificationManagerService.java. This could allow a foreground service to run without showing a notification, potentially leading 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-11, update to a version that includes the fix for this issue. For Android version Android-12, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting the use of foreground services to minimize the risk of exploitation.

Fix

Related Identifiers

ASB-A-191981182

CVE-2021-0981

Affected Products

Android

References · 7

• https://source.android.com/security/bulletin/2022-07-01 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0981 · Security Note
• https://osv.dev/vulnerability/ASB-A-191981182 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-0981 · Vendor Advisory
• https://android.googlesource.com/platform/frameworks/base/+/6f657f8f5b7d41af426d6cd8d60bfda6e12057c0 · Note
• https://t.me/cvenotify/33002 · Telegram Post
• https://t.me/cibsecurity/34074 · Telegram Post