Moxa AWK-3131A Hard-coded Administrator Credentials Vulnerability(CVE-2016-8717)

Summary

An exploitable Use of Hard-coded Credentials vulnerability exists in the Moxa AWK-3131A Wireless Access Point running firmware 1.1. The device operating system contains an undocumented, privileged (root) account with hard-coded credentials, giving attackers full control of affected devices.

Tested Versions

Moxa AWK-3131A Series Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client 1.1

Product URLs

http://www.moxa.com/product/AWK-3131A.htm

CVSSv3 Score

10.0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Details

An exploitable Use of Hard-coded Credentials vulnerability exists in the Moxa AWK-3131A Series Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client. The device operating system contains an undocumented, privileged (root) account with hard-coded credentials, giving attackers full control of affected devices.

user: 94jo3dkru4
password: moxaiwroot

The device lacks the functionality for legitimate administrators to modify or remove the backdoor account.

Mitigation

Disable all remotely-accessible services, such as SSH and Telnet.

Timeline

• 2016-11-14 - Vendor Disclosure
• 2017-04-21 - Public Release

CREDIT

• Discovered by Patrick DeSantis of Cisco Talos.