Ragentek Android software contains an over-the-air update mechanism that communicates over an unencrypted channel, which can allow a remote attacker to execute arbitrary code with root privileges.
|CWE-494: Download of Code Without Integrity Check – CVE-2016-6564
Android devices with code from Ragentek contain a privileged binary that performs over-the-air (OTA) update checks.
This binary, which resides as /system/bin/debugs, runs with root privileges and does not communicate over an encrypted channel.
Server responses to requests sent by the debugs binary include functionalities to execute arbitrary commands as root, install applications, or update configurations.
Examples of a request sent by the client binary:
|An remote, unauthenticated attacker in a position to perform man-in-the-middle attacks can execute arbitrary commands as root.|
|Apply an update
The reporter indicates that BLU has provided an update, which is intended to address the vulnerability, Please see the vendor status page for more details.
For other devices, please check with your device vendor for updates. If you are unable to apply an update, see the following workarounds:
|Avoid use of untrusted networks
Use your device on trusted networks only, and avoid using untrusted networks such as open or public wifi.
Vendor Information (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|BLU Products||Affected||–||11 Nov 2016|
|Infinix Mobility||Affected||–||11 Nov 2016|
|Ragentek||Affected||–||11 Nov 2016|
|Beeline||Unknown||–||11 Nov 2016|
|Doogee||Unknown||–||11 Nov 2016|
|IKU Mobile||Unknown||–||11 Nov 2016|
|Leagoo||Unknown||–||11 Nov 2016|
|XOLO||Unknown||–||11 Nov 2016|
If you are a vendor and your product is affected, let us know.
CVSS Metrics (Learn More)
Thanks to Dan Dahlberg and Tiago Pereira of BitSight Technologies and Anubis Networks for reporting this vulnerability.
This document was written by Trent Novelly.
- CVE IDs:CVE-2016-6564
- Date Public:11 Nov 2016
- Date First Published:17 Nov 2016
- Date Last Updated:17 Nov 2016
- Document Revision:20