[FD] [CORE-2015-0002] - Android WiFi-Direct Denial of Service

Core Security - Corelabs Advisory http://ift.tt/140w507 Android WiFi-Direct Denial of Service 1. *Advisory Information* Title: Android WiFi-Direct Denial of Service Advisory ID: CORE-2015-0002 Advisory URL: http://ift.tt/1zi7EtZ Date published: 2015-01-26 Date of last update: 2015-01-26 Vendors contacted: Android Security Team Release mode: User release 2. *Vulnerability Information* Class: Uncaught Exception [CWE-248] Impact: Denial of service Remotely Exploitable: Yes Locally Exploitable: No CVE Name: CVE-2014-0997 3. *Vulnerability Description* Some Android devices are affected by a Denial of Service attack when scanning for WiFi Direct devices. An attacker could send a specially crafted 802.11 Probe Response frame causing the Dalvik subsystem to reboot because of an Unhandle Exception on WiFiMonitor class. 4. *Vulnerable Packages* . Nexus 5 - Android 4.4.4 . Nexus 4 - Android 4.4.4 . LG D806 - Android 4.2.2 . Samsung SM-T310 - Android 4.2.2 . Motorola RAZR HD - Android 4.1.2 Other devices could be also affected. 5. *Non-vulnerable packages* . Android 5.0.1 . Android 5.0.2 6. *Vendor Information, Solutions and Workarounds* Some mitigation actions may be to avoid using WiFi-Direct or update to a non-vulnerable Android version. Contact vendor for further information. 7. *Credits* This vulnerability was discovered and researched by Andres Blanco from the CoreLabs Team. The publication of this advisory was coordinated by the Core Advisories Team. 8. *Technical Description / Proof of Concept Code* Android makes use of a modified *wpa_supplicant*[1] in order to provide an interface between the wireless driver and the Android platform framework. Below the function that handles *wpa_supplicant* events. This function returns a jstring from calling NewStringUTF method. /--



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