Executive Summary

This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Title D-Link DIR-130 and DIR-330 are vulnerable to authentication bypass and do not protect credentials
Name VU#553503 First vendor Publication 2017-03-15
Vendor VU-CERT Last vendor Modification 2017-03-24
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Vulnerability Note VU#553503

D-Link DIR-130 and DIR-330 are vulnerable to authentication bypass and do not protect credentials

Original Release date: 15 Mar 2017 | Last revised: 24 Mar 2017


The D-Link DIR-130 and DIR-330 are vulnerable to authentication bypass of the remote login page, and do not sufficiently protect administrator credentials.


The D-Link DIR-130, firmware version 1.23, and DIR-330, firmware version 1.12, are vulnerable to the following:

CWE-294: Authentication Bypass by Capture-replay - CVE-2017-3191

A remote attacker that can access the remote management login page can manipulate the POST request in such a manner as to access some administrator-only pages such as tools_admin.asp without credentials.

CWE-522: Insufficiently Protected Credentials - CVE-2017-3192

The tools_admin.asp page discloses the administrator password in base64 encoding in the returned web page. A remote attacker with access to this page (potentially through a authentication bypass such as CVE-2017-3191) may obtain administrator credentials for the device.

D-Link has confirmed these issues to the CERT/CC.

Other D-Link models may be affected by these issues, but were not tested by the reporter or the CERT/CC. CERT/CC has received a report that the DIR-655 may also be impacted, but has not verified it at this time.


A remote attacker may be able to obtain administrator credentials and access administrator functionality of the device.


The CERT/CC is currently unaware of a practical solution to this problem.

Affected users may consider the following workaround:

Restrict Access

As a general good security practice, only allow connections from trusted hosts and networks. Additionally, you may wish to disable remote administration of the router.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
D-Link Systems, Inc.Affected25 Jan 201707 Mar 2017
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)



  • http://cwe.mitre.org/data/definitions/294.html
  • http://cwe.mitre.org/data/definitions/522.html


Thanks to James Edge for reporting this vulnerability.

This document was written by Garret Wassermann.

Other Information

  • CVE IDs:CVE-2017-3191CVE-2017-3192
  • Date Public:15 Mar 2017
  • Date First Published:15 Mar 2017
  • Date Last Updated:24 Mar 2017
  • Document Revision:30


If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/553503

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-522 Insufficiently Protected Credentials (CWE/SANS Top 25)
50 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

Os 1
Os 1

Alert History

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Date Informations
2017-12-27 21:23:56
  • Multiple Updates
2017-12-16 09:23:30
  • Multiple Updates
2017-03-24 21:23:10
  • Multiple Updates
2017-03-15 17:22:54
  • First insertion