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CVE-2017-2126: Buffalo Wapm 1166d Firmware: Authentication bypass

CVE-2017-2126 is rated critical with a CVSS v3.0 base score of 9.8 and affects Buffalo Wapm 1166d 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

WAPM-1166D firmware Ver.1.2.7 and earlier, WAPM-APG600H firmware Ver.1.16.1 and earlier allows remote attackers to bypass authentication and access the configuration interface via unspecified vectors.

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-287: Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected products

  • Buffalo Wapm 1166d Firmware: up to and including 1.2.7
  • Buffalo Wapm Apg600h Firmware: up to and including 1.16.1

References