CVE-2019-9938 : Security Advisory and Response

Before version 4.0.42, the SHAREit app for Android had a vulnerability that could be exploited by a remote attacker. This attacker could be someone on the same network or connected to a public "open" Wi-Fi hotspot that was created by the SHAREit app when a file transfer was initiated. By exploiting this vulnerability, the attacker could download any type of file from the device, such as contacts, photos, videos, sound clips, and more. It is important to note that the attacker needed to be authenticated as a "recognized device" in order to carry out this attack.

Understanding CVE-2019-9938

The SHAREit application before version 4.0.42 for Android allows a remote attacker to download arbitrary files from the device, including contacts, photos, videos, and sound clips, if authenticated as a "recognized device."

What is CVE-2019-9938?

The vulnerability in the SHAREit app for Android before version 4.0.42 allowed a remote attacker to download various files from the device when connected to the same network or a public Wi-Fi hotspot created by the app.

The Impact of CVE-2019-9938

Remote attackers could access and download sensitive files from the device, compromising user privacy and security.
Attackers could potentially obtain contacts, photos, videos, and other personal data stored on the device.

Technical Details of CVE-2019-9938

The technical aspects of the vulnerability include:

Vulnerability Description

The vulnerability in SHAREit app versions before 4.0.42 allowed unauthorized file downloads by authenticated attackers on the same network or public Wi-Fi hotspots.

Affected Systems and Versions

Product: SHAREit app for Android
Versions affected: Before 4.0.42

Exploitation Mechanism

Attacker needed to be authenticated as a "recognized device" on the network to exploit the vulnerability.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-9938.

Immediate Steps to Take

Update the SHAREit app to version 4.0.42 or newer to patch the vulnerability.
Avoid connecting to public Wi-Fi networks when transferring sensitive files.

Long-Term Security Practices

Regularly update all apps and software on devices to ensure the latest security patches are applied.
Use secure file transfer methods and avoid sharing sensitive information over unsecured networks.
Implement strong authentication mechanisms to prevent unauthorized access to devices and data.

Patching and Updates

Install security updates and patches provided by the SHAREit app to address the vulnerability and enhance overall security.