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Threema Work scores 16.1
Malcore scores Threema Work 16.1
This blog has been taken from Malcore’s analysis results. The points below are not an exhaustive list. For a full view of Malcore’s static analysis of the Threema Work App APK view it on Malcore.
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New Relic Google Firebase Analytics
High severity warnings from code analysis
App uses SQLite Database and execute raw SQL query. Untrusted user input in raw SQL queries can cause SQL Injection. Also sensitive information should be encrypted and written to the database.
The app uses jackson deserialization library. Deserialization of untrusted input can result in arbitrary code execution.
Insecure Implementation of SSL. Trusting all the certificates or accepting self signed certificates is a critical Security Hole. This application is vulnerable to MITM attacks.
The App uses an insecure Random Number Generator.
This App has capabilities to prevent against Screenshots from Recent Task History/ Now On Tap etc.
Files may contain hardcoded sensitive information like usernames, passwords, keys etc.
App can read/write to External Storage. Any App can read data written to External Storage.
App creates temp file. Sensitive information should never be written into a temp file.
Suspicious severity warnings from code analysis
Application attempts to discover build version of device.
Dangerous Labelled permissions from Android
Android Dangerous labelled permissions as Dangerous from this library https://developer.android.com/reference/android/Manifest.permission.
Name: WRITE_SETTINGS Description: Allows an application to modify the system's settings data. Malicious applications can corrupt your system's configuration.
Name: ACCESS_COARSE_LOCATION Description: Access coarse location sources, such as the mobile network database, to determine an approximate phone location, where available. Malicious applications can use this to determine approximately where you are.
Name: BLUETOOTH Description: Allows an application to view configuration of the local Bluetooth phone and to make and accept connections with paired devices.
Name: WRITE_CONTACTS Description: Allows an application to modify the contact (address) data stored on your phone. Malicious applications can use this to erase or modify your contact data.
Name: ACCESS_NETWORK_STATE Description: Allows an application to view the status of all networks.
Name: WRITE_EXTERNAL_STORAGE Description: Allows an application to write to the SD card.
Name: MANAGE_ACCOUNTS Description: Allows an application to perform operations like adding and removing accounts and deleting their password.
Name: ACCESS_FINE_LOCATION Description: Access fine location sources, such as the Global Positioning System on the phone, where available. Malicious applications can use this to determine where you are and may consume additional battery power.
Name: READ_EXTERNAL_STORAGE Description: Allows an application to read from SD Card.
Name: WRITE_SYNC_SETTINGS Description: Allows an application to modify the sync settings, such as whether sync is enabled for Contacts.
Name: AUTHENTICATE_ACCOUNTS Description: Allows an application to use the account authenticator capabilities of the Account Manager, including creating accounts as well as obtaining and setting their passwords.
Name: CALL_PHONE Description: Allows the application to call phone numbers without your intervention. Malicious applications may cause unexpected calls on your phone bill. Note that this does not allow the application to call emergency numbers.
Name: READ_PHONE_STATE Description: Allows the application to access the phone features of the device. An application with this permission can determine the phone number and serial number of this phone, whether a call is active, the number that call is connected to and so on.
Name: READ_SETTINGS Description: Allows applications to read the global setting of the device it is running on
Name: CAMERA Description: Allows application to take pictures and videos with the camera. This allows the application to collect images that the camera is seeing at any time.
Name: WAKE_LOCK Description: Allows an application to prevent the phone from going to sleep.
Name: RECORD_AUDIO Description: Allows application to access the audio record path.
Name: READ_CONTACTS Description: Allows an application to read all of the contact (address) data stored on your phone. Malicious applications can use this to send your data to other people.
Name: MODIFY_AUDIO_SETTINGS Description: Allows application to modify global audio settings, such as volume and routing.
Name: ANSWER_PHONE_CALLS Description: Allows the app to answer an incoming phone call.
To view how these results compare within industry see our analysis:
To view how these scores are created visit our transparency post where we published a description of our phone application threat scoring algorithm.