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CVE-2017-3192: D Link Dir 130 Firmware: Authentication bypass

CVE-2017-3192 is rated critical with a CVSS v3.0 base score of 9.8 and affects D Link Dir 130 Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

D-Link DIR-130 firmware version 1.23 and DIR-330 firmware version 1.12 do not sufficiently protect administrator credentials. 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.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: None. No action from any user is needed.
Scope: Unchanged. Impact stays within the vulnerable component.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-522: Insufficiently Protected Credentials

The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

Affected products

D Link Dir 130 Firmware: 1.23
D Link Dir 330 Firmware: 1.12