Couchsurfing Travel App - AWS Credentials, Customized SSL, Dangerous filesystem permissions vulnerabilities

Name

Vendor

Link

Store

Version

• CRITICAL
MIT license

The app should be compliant with open source license requirements.

Dangerous filesystem permissions

Files created with these methods could be worldwide readable.

Customized SSL

Check certificate validation. Do not create or redefine X509Certificate class methods by yourself, if you don't understand risks. Use the existing API.

WebView code execution

WebView 'addJavascriptInterface' could be used to control the host app with JavaScript bindings. Remote Code Execution (RCE) is possible.

AWS Credentials

Everyone can use it to access your resources.

Redefined SSL Common Names verifier

This app uses self defined certificate verifier. If it is not properly configured it could allow attackers to do MITM attacks with their valid certificate without your knowledge.

• MEDIUM
WebView files access

Control of WebView context allows to access local files.

WebView JavaScript enabled

WebView 'setJavaScriptEnabled(true)' could be exploited during cross-site scripting attacks.

SD-card access

SD-cards and other external storages have 'worldwide read' policy.

Dynamic Code Loading

Code for 'DexClassLoader' could be tampered.

Exported components

Other applications could access the interfaces.

• NOTICE
Suspicious files

Are you sure these files should be here?

External URLs

Were do they point?

Unsafe deleting

All items deleted with 'file.delete()' could be recovered.

KeyStore usage

The app uses Android KeyStore subsystem.

References