CVE-2017-0469

Vulnerability

CVE-2017-0469 is a memory corruption vulnerability in Android's Mediaserver component. The flaw occurs during processing of specially crafted media files and data, leading to memory corruption in the Mediaserver process [1]. Affected versions are Android 6.0, 6.0.1, 7.0, and 7.1.1. The vulnerability can be triggered when a user opens a malformed media file that is processed by Mediaserver.

Exploitation

An attacker needs to deliver a specially crafted media file to the target device. No authentication is required if the file is processed by an application that uses Mediaserver, such as a media player. The attacker must convince the user to open the file, after which Mediaserver processes the malicious data, causing memory corruption [1]. The exact sequence involves crafting the file to exploit a specific memory handling flaw during parsing.

Impact

Successful exploitation results in remote code execution within the context of the Mediaserver process. The attacker gains the ability to execute arbitrary code with the privileges of Mediaserver, potentially leading to disclosure of sensitive information, modification of data, or further compromise of the device. The severity is rated Critical due to the remote code execution capability and memory corruption impact [1].

Mitigation

The fix for CVE-2017-0469 was included in the March 2017 Android Security Bulletin [1]. Users should apply OTA updates or install the security patch level of March 2017 or later. No workaround is specified for unpatched devices. Affected versions are expected to receive updates via their respective OEMs.