CVE-2023-40134: Open Source Vulnerability in platform/frameworks/base - Enumerating other users' contact photos via authentication item shown in AutoFillService's FillUi

platform/frameworks/base Updated 02 Oct 2025

Summary

01/02/2025

Disclosed on

CVE-2023-40134

CVE

Yes i

Fix available

High

Severity

Not published

CVSS Score

CVE-2023-40134: In FillUi of FillUi.java, there is a possible way to view another users images. Affects platform/frameworks/base across 4 version ranges.

>= 12:0, < 12:2025-02-01 >= 12L:0, < 12L:2025-02-01 >= 13:0, < 13:2025-02-01 >= 15-next:0, < 15-next:2025-02-01

Fixed in 15-next:2025-02-01. How to fix ↓

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Background

The package under scrutiny is platform/frameworks/base, which is a part of the Android ecosystem. It provides fundamental functionalities and services for the Android operating system. This vulnerability affects versions 12 and 13 of the Android platform. The package is responsible for handling AutoFillService's FillUi, which is used for autofilling user information. The vulnerability allows an attacker to view another user's contact photos by exploiting a confused deputy issue in the isFullScreen function of FillUi.java. This can lead to local information disclosure without requiring additional execution privileges or user interaction.

Vulnerability Detail

The vulnerability in platform/frameworks/base allows an attacker to enumerate and view other users' contact photos. This is possible due to a confused deputy issue in the isFullScreen function of FillUi.java. By exploiting this vulnerability, an attacker can gain unauthorized access to sensitive information, leading to local information disclosure. The vulnerability does not require any additional execution privileges or user interaction, making it a significant security concern. It affects Android versions 12 and 13.

How To Fix

Minimum fixed version

15-next:2025-02-01

This is the first release that contains the fix.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The vulnerability in platform/frameworks/base allows unauthorized access to other users' contact photos, leading to local information disclosure. It is crucial to update the affected package to a version that includes the fix provided by the Android Open Source Project. For further support on vulnerability remediation, please contact DevNack.com.

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