PT-2020-11469 · Google · Android

Published 2020-05-14 · Updated 2021-07-21 · CVE-2020-0105

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-9 through Android-10

Description The issue is related to a missing permission check in the onKeyguardVisibilityChanged function of key store service.cpp. This could lead to local escalation of privilege, allowing apps to use keyguard-bound keys when the screen is locked, with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android versions Android-9 through Android-10, consider restricting access to keyguard-bound keys when the screen is locked until a patch is available. As a temporary workaround, consider disabling the use of keyguard-bound keys for apps when the screen is locked to minimize the risk of exploitation.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2020-0105

Affected Products

Android

References · 4

• https://osv.dev/vulnerability/CVE-2020-0105 · Vendor Advisory
• https://source.android.com/security/bulletin/2020-05-01 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-0105 · Security Note
• https://t.me/cvenotify/3823 · Telegram Post