PT-2021-13003 · Google · Android

Published 2021-01-01 · Updated 2021-01-13 · CVE-2021-0320

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Android versions Android-10 through Android-11

Description: A race condition in the is device locked and set device locked functions of keystore keymaster enforcement.h may allow bypassing lockscreen requirements for keyguard bound keys. This could lead to local information disclosure without requiring additional execution privileges. User interaction is not necessary for exploitation.

Recommendations: For Android versions Android-10 through Android-11, consider restricting access to keyguard bound keys until a patch is available. As a temporary workaround, consider implementing additional security measures to prevent unauthorized access to sensitive information.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ASB-A-169933423

CVE-2021-0320

Affected Products

Android

References · 5

• https://source.android.com/security/bulletin/2021-01-01 · Vendor Advisory
• https://osv.dev/vulnerability/ASB-A-169933423 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0320 · Security Note
• https://osv.dev/vulnerability/CVE-2021-0320 · Vendor Advisory
• https://android.googlesource.com/platform/system/security/+/33b83f6f3211358568894f48e2aa03c8851e11b7 · Note