Quantum Secular Labs / Blog / Advisories

CVE-2017-5178: Schneider Electric Tableau Server: Hard-coded credentials or backdoor

CVE-2017-5178 is rated critical with a CVSS v3.0 base score of 9.8 and affects Schneider Electric Tableau Server, along with 1 other product in NVD’s configuration data. 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 Schneider Electric Tableau Server/Desktop Versions 7.0 to 10.1.3 in Wonderware Intelligence Versions 2014R3 and prior. These versions contain a system account that is installed by default. The default system account is difficult to configure with non-default credentials after installation, and changing the default credentials in the embedded Tableau Server is not documented. If Tableau Server is used with Windows integrated security (Active Directory), the software is not vulnerable. However, when Tableau Server is used with local authentication mode, the software is vulnerable. The default system account could be used to gain unauthorized access.

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-1188: Initialization of a Resource with an Insecure Default

The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.

Affected products

  • Schneider Electric Tableau Server: 7.0; 10.1.3
  • Schneider Electric Wonderware Intelligence: up to and including 2014
  • Schneider Electric Tableau Desktop: 7.0; 10.1.3

References