PT-2023-18031 · Google · Android

Published 2023-07-12 · Updated 2025-01-06 · CVE-2023-21245

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 prior to the fixed version

Description A logic error in the showNextSecurityScreenOrFinish function of KeyguardSecurityContainerController.java allows access to the lock screen during device setup. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android versions prior to the fixed version, consider disabling the lock screen feature during device setup as a temporary workaround until a patch is available. Restrict access to the showNextSecurityScreenOrFinish function in KeyguardSecurityContainerController.java to minimize the risk of exploitation.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

ASB-A-222446076

CVE-2023-21245

Affected Products

Android

References · 9

• https://source.android.com/security/bulletin/2023-07-01 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-21245 · Security Note
• https://android.googlesource.com/platform/frameworks/base/+/a33159e8cb297b9eee6fa5c63c0e343d05fad622 · Patch
• https://osv.dev/vulnerability/CVE-2023-21245 · Vendor Advisory
• https://osv.dev/vulnerability/ASB-A-222446076 · Vendor Advisory
• https://t.me/cvenotify/54238 · Telegram Post
• https://android.googlesource.com/platform/frameworks/base/+/d42f8d774901e8bcdf2c83b61b01fad79ce2f69f · Note
• https://twitter.com/xvonfers/status/1744813655189815328 · Twitter Post
• https://source.android.com/security/bulletin/2024-01-01 · Note