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Microsoft Teams scores 38

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Microsoft Teams scores 38

Malcore scores Microsoft Teams 38

David Robinson
Feb 9, 2023
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Microsoft Teams scores 38

blog.malcore.io
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Insights

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 Microsoft Teams App APK view it on Malcore.

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Discovered Trackers

Microsoft Visual Studio App Center Crashes
Bugsnag
Display
Google Firebase Analytics

High severity warnings from code analysis

The App uses an insecure Random Number Generator.
App creates temp file. Sensitive information should never be written into a temp file.
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.
Files may contain hardcoded sensitive information like usernames, passwords, keys etc.
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.
App can read/write to External Storage. Any App can read data written to External Storage.
This App has capabilities to prevent against Screenshots from Recent Task History/ Now On Tap etc.
This App download files using Android Download Manager.

Suspicious severity warnings from code analysis

Application attempts to discover build version of device.
Application attempts to parse CPU information.

Dangerous Labelled permissions from Android

Android Dangerous labelled permissions as Dangerous from this library https://developer.android.com/reference/android/Manifest.permission.

Name: CHANGE_NETWORK_STATE

Description: Allows an application to change the state of network connectivity.
Name: WRITE_SETTINGS

Description: Allows an application to modify the system's settings data. Malicious applications can corrupt your system's configuration.
Name: USE_CREDENTIALS

Description: Allows an application to request authentication tokens.
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: BLUETOOTH_ADMIN

Description: Allows an application to configure the local Bluetooth phone and to discover and pair with remote devices.
Name: NFC

Description: Allows an application to communicate with Near-Field Communication (NFC) tags, cards and readers.
Name: READ_SETTINGS

Description: Allows applications to read the global setting of the device it is running on.
Name: ACCESS_NETWORK_STATE

Description: Allows an application to view the status of all networks.
Name: ACCESS_BACKGROUND_LOCATION

Description: Allows an app to access location in the background.
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: 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: 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: SYSTEM_ALERT_WINDOW

Description: Allows an application to show system-alert windows. Malicious applications can take over the entire screen of the phone.
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.

To view how these results compare within industry see our analysis:

Malcore’s Blog
Malcore Mobile App Analysis - Social Media & Communication
The Malcore team are releasing individual blog posts on each popular social media mobile applications. These are detailed individual blog posts that pull together the results of Malcore’s analysis per application. The social media industry analysis project shows us the relative Malcore risk score for each application. It is a comparative process where th…
Read more
8 months ago · Malcore Team

To view how these scores are created visit our transparency post where we published a description of our phone application threat scoring algorithm.

Malcore’s Blog
Transparency on Malcore Mobile Algorithm
Why the Malcore Mobile App analyzer algorithm was built The Malcore team have begun a project to analyze as many popular mobile applications as possible with Malcore and publish the results. A few comments about this project. We believe in transparency…
Read more
10 months ago · Malcore Team

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Microsoft Teams scores 38

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