lcimeni / disney

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NowSecure dynamic analysis: Sensitive Data Stored Insecurely on External Storage (SD Card) #42

Open lcimeni opened 3 years ago

lcimeni commented 3 years ago

Finding Description

The information specified has been found within external storage locations on the device. Data written to device storage can be accessed through several attack vectors. Data stored to the SD Card is not as protected as data stored inside the application's data container.

Steps to Reproduce

After exercising the app, files stored on the SD Card are analyzed and any instances where sensitive data is found are flagged.

Business Impact

The app is storing the username on the device insecurely. Anyone with access to the device would have access to the information.

Remediation Resources

Do not store sensitive information on external storage at a minimum. Sensitive data should be transmitted and displayed but not persisted to memory. This is typically achieved by storing sensitive data in RAM (clear at application close) or encrypting the data using strong encryption.

If sensitive data must be persisted on the device, it should be protected appropriately. See https://developer.android.com/topic/security/data for details and code snippets to implement these protections.

The context table below gives the location on the device that the specified information was stored insecurely.

Risk and Regulatory Information

Severity: medium CVSS: 6.1

Application

See more detail in the NowSecure Report