Sony Xperia L1 Screenshot input validation

Summaryinfo

A vulnerability, which was classified as problematic, was found in Sony Xperia L1. Affected by this issue is some unknown functionality of the component Screenshot Handler. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2018-14983. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Sony Xperia L1 (Smartphone Operating System) (affected version not known). It has been declared as problematic. This vulnerability affects some unknown functionality of the component Screenshot Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality. CVE summarizes:

The Sony Xperia L1 Android device with a build fingerprint of Sony/G3313/G3313:7.0/43.0.A.6.49/2867558199:user/release-keys contains the android framework (i.e., system_server) with a package name of android (versionCode=24, versionName=7.0) that has been modified by Sony or another entity in the supply chain. The system_server process in the core android package has an exported broadcast receiver that allows any app co-located on the device to programmatically initiate the taking of a screenshot and have the resulting screenshot be written to external storage. The taking of a screenshot is not transparent to the user; the device has a screen animation as the screenshot is taken and there is a notification indicating that a screenshot occurred. If the attacking app also requests the EXPAND_STATUS_BAR permission, it can wake the device up using certain techniques and expand the status bar to take a screenshot of the user's notifications even if the device has an active screen lock. The notifications may contain sensitive data such as text messages used in two-factor authentication. The system_server process that provides this capability cannot be disabled, as it is part of the Android framework. The notification can be removed by a local Denial of Service (DoS) attack to reboot the device.

The weakness was published 04/25/2019. This vulnerability was named CVE-2018-14983 since 08/05/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/02/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Smartphone Operating System

Vendor

• Sony

Name

• Xperia L1

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

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