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CVE-2017-5145: Carlosgavazzi Vmu C Em Firmware: Cross-Site Request Forgery

CVE-2017-5145 is rated critical with a CVSS v3.0 base score of 10.0 and NVD lists 2 affected products, including Carlosgavazzi Vmu C Em 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

An issue was discovered in Carlo Gavazzi VMU-C EM prior to firmware Version A11_U05, and VMU-C PV prior to firmware Version A17. Successful exploitation of this CROSS-SITE REQUEST FORGERY (CSRF) vulnerability can allow execution of unauthorized actions on the device such as configuration parameter changes, and saving modified configuration.

Severity breakdown

CVSS v3.0 10.0: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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: Changed. Impact reaches beyond the vulnerable component to other resources.
  • 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-352: Cross-Site Request Forgery

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

Affected products

  • Carlosgavazzi Vmu C Em Firmware: all versions listed by NVD
  • Carlosgavazzi Vmu C Pv Firmware: all versions listed by NVD

References