CVE-2018-14983 : Security Advisory and Response

The Sony Xperia L1 Android device is equipped with a vulnerability that allows any co-located app to capture screenshots without user consent, potentially exposing sensitive information.

Understanding CVE-2018-14983

This CVE identifies a security issue in the Android framework of the Sony Xperia L1 device that enables unauthorized apps to capture screenshots.

What is CVE-2018-14983?

The vulnerability in the system_server process of the Android framework allows any app on the device to programmatically take screenshots and save them to external storage without user knowledge.

The Impact of CVE-2018-14983

Unauthorized apps can capture sensitive information like two-factor authentication codes from notifications without user consent.
The device displays no indication to the user that a screenshot is being taken, compromising privacy.

Technical Details of CVE-2018-14983

This section delves into the specifics of the vulnerability.

Vulnerability Description

The system_server process in the Android framework of the Sony Xperia L1 device contains an exported broadcast receiver that permits any co-located app to capture screenshots without user awareness.

Affected Systems and Versions

Product: Sony Xperia L1
Vendor: Sony
Versions: Android 7.0 with build fingerprint Sony/G3313/G3313:7.0/43.0.A.6.49/2867558199

Exploitation Mechanism

Attacking apps can request the EXPAND_STATUS_BAR permission to wake up the device, expand the status bar, and capture screenshots of sensitive notifications.

Mitigation and Prevention

Protecting against and addressing the CVE-2018-14983 vulnerability.

Immediate Steps to Take

Avoid installing apps from untrusted sources.
Regularly monitor notifications for unusual activities.
Consider using privacy screen protectors to prevent unauthorized viewing.

Long-Term Security Practices

Keep the device updated with the latest security patches.
Review app permissions before installation to limit access to sensitive features.

Patching and Updates

Sony should release a security patch to address this vulnerability.