avast! Mobile Security Android application denial-of-service vulnerability

Overview

avast! Mobile Security Android application version 2.0.3587, and possibly earlier versions, contains a denial-of-service vulnerability.

Description

avast! Mobile Security (version 2.0.3587) crashes if an Intent is sent to com.avast.android.mobilesecurity.app.scanner.DeleteFileActivity with no arguments. Upon receiving the malformed intent the application will crash with the following message.

“Unfortunately, avast! Mobile Security has stopped.”

The logcat log contains a message confirming that the application has crashed.

“I/ActivityManager( 175): Process com.avast.android.mobilesecurity (pid 6596) has died.”

This results in a malicious application being able to disable the avast! Mobile Security software.

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Impact

A malicious application installed on the phone may be able to disable the avast! Mobile Security software.

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Solution

Apply an Update

Upgrade to avast! Mobile Security version 2.0.4400 or later to address this vulnerability.

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Vendor Information

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Avast! Antivirus Software Affected

Notified: March 22, 2013 Updated: April 16, 2013

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group	Score	Vector
Base	3.8	AV:L/AC:H/Au:S/C:N/I:N/A:C
Temporal	3	E:POC/RL:OF/RC:C
Environmental	2.3	CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

<https://play.google.com/store/apps/details?id=com.avast.android.mobilesecurity&gt;

Acknowledgements

Thanks to Kurt Traver for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

CVE IDs:	CVE-2013-0122
Date Public:	2013-04-19 Date First Published: