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CVE-2018-17914: Aveva Indusoft Web Studio: Authentication bypass

CVE-2018-17914 is rated critical with a CVSS v3.1 base score of 9.8 and affects Aveva Indusoft Web Studio, 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

InduSoft Web Studio versions prior to 8.1 SP2, and InTouch Edge HMI (formerly InTouch Machine Edition) versions prior to 2017 SP2. This vulnerability could allow an unauthenticated user to remotely execute code with the same privileges as that of the InduSoft Web Studio or InTouch Edge HMI (formerly InTouch Machine Edition) runtime.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/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-258: Empty Password in Configuration File

Using an empty string as a password is insecure.

Affected products

  • Aveva Indusoft Web Studio: 6.1 sp5; 6.1 sp6_p3; 7.1; 7.1 sp1; 7.1 sp2; 7.1 sp3; 7.1 sp3_p1; 7.1 sp3_p2; 7.1 sp3_p3; 7.1 sp3_p4; 7.1 sp3_p5; 7.1 sp3_p6
  • Aveva Edge: 8.1; 8.1 sp1
  • Aveva Intouch Machine Edition 2014: r2

References