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CVE-2018-7800: Schneider Electric Evlink Parking Firmware: Hard-coded credentials or backdoor

CVE-2018-7800 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists Schneider Electric Evlink Parking Firmware as the affected product. 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

A Hard-coded Credentials vulnerability exists in EVLink Parking, v3.2.0-12_v1 and earlier, which could enable an attacker to gain access to 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-798: Use of Hard-coded Credentials

The product contains hard-coded credentials, such as a password or cryptographic key.

Affected products

  • Schneider Electric Evlink Parking Firmware: up to and including 3.2.0-12

References