A vulnerability was found in TP-LINK C2 and C20i up to 0.9.1. It has been rated as critical. This issue affects an unknown code of the component vsftpd. The manipulation of the argument password with the input value test leads to a hard-coded credentials vulnerability. Using CWE to declare the problem leads to CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

vsftpd on TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n has a backdoor admin account with the 1234 password, a backdoor guest account with the guest password, and a backdoor test account with the test password.

The bug was discovered 04/25/2017. The weakness was released 04/25/2017 (Website). The advisory is shared at pierrekim.github.io. The identification of this vulnerability is CVE-2017-8218 since 04/25/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1110.001 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at 100600, 100602 and 100603.

Productinfo

Vendor

• TP-LINK

Name

• C2
• C20i

Version

• 0.9.0
• 0.9.1

License

• commercial

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CPE 2.2info

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