The avast! Mobile Security application before 2.0.4400 for Android allows attackers to cause a denial of service (application crash) via a crafted application that sends an intent to com.avast.android.mobilesecurity.app.scanner.DeleteFileActivity with zero arguments.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.