ZTE ZXV10 W300 router contains hardcoded credentials

2014-02-09 / 2014-02-10
Credit: USCERT
Risk: High
Local: No
Remote: Yes
CWE: CWE-798


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

Overview ZTE ZXV10 W300 router version 2.1.0, and possibly earlier versions, contains hardcoded credentials. (CWE-798) Description ZTE ZXV10 W300 router contains hardcoded credentials that are useable for the telnet service on the device. The username is "admin" and the password is "XXXXairocon" where "XXXX" is the last four characters of the device's MAC address. The MAC address is obtainable over SNMP with community string public. Impact A remote unauthenticated attacker may be able to obtain the MAC address of the device and log into the telnet service of the device with hardcoded credentials. Solution We are currently unaware of a practical solution to this problem. Please consider the following workaround. Restrict Access Enable firewall rules so the telnet service of the device is not accessible to untrusted sources. Enable firewall rules that block SNMP on the device.

References:

http://www.kb.cert.org/vuls/id/228886


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