PT-2021-13017 · Google · Android

Published 2021-02-01 · Updated 2023-08-08 · CVE-2021-0336

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-8.1 through Android-11

Description: The issue is related to a possible permissions bypass due to a mutable PendingIntent in the onReceive of BluetoothPermissionRequest.java. This could lead to local escalation of privilege, bypassing a permission check, with User execution privileges needed. User interaction is not needed for exploitation.

Recommendations: For Android versions Android-8.1 through Android-11, consider restricting access to the BluetoothPermissionRequest.java module to minimize the risk of exploitation until a patch is available. As a temporary workaround, disabling the use of mutable PendingIntents in the onReceive function may help mitigate the issue.

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

ASB-A-158219161

CVE-2021-0336

Affected Products

Android

References · 6

• https://osv.dev/vulnerability/ASB-A-158219161 · Vendor Advisory
• https://source.android.com/security/bulletin/2021-02-01 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0336 · Security Note
• https://osv.dev/vulnerability/CVE-2021-0336 · Vendor Advisory
• https://t.me/cibsecurity/23374 · Telegram Post
• https://android.googlesource.com/platform/packages/apps/Settings/+/f065b8743377f62d6d0dc99da24ac034314dae1f · Note