PT-2022-11080 · Google · Android

Published 2022-04-01 · Updated 2022-04-20 · CVE-2021-39807

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-12L

Description A missing permission check in the handleNfcStateChanged function of SecureNfcEnabler.java allows for a possible way to enable NFC from the Guest account. This could lead to local escalation of privilege from the Guest account with no additional execution privileges needed. User interaction is not required for exploitation.

Recommendations For Android versions Android-10 through Android-12L, update to a version that includes the fix for this issue to prevent local escalation of privilege.

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

ASB-A-209446496

CVE-2021-39807

Affected Products

Android

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-39807 · Security Note
• https://osv.dev/vulnerability/ASB-A-209446496 · Vendor Advisory
• https://source.android.com/security/bulletin/2022-04-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39807 · Vendor Advisory
• https://android.googlesource.com/platform/packages/apps/Settings/+/c59ecb07f5b16d38f3976ce393cc5c29a241963a · Note