Quantum Secular Labs / Blog / Advisories

CVE-2017-4997: Dell Emc Vasa Provider Virtual Appliance: Authentication bypass

CVE-2017-4997 is rated critical with a CVSS v3.1 base score of 9.8 and affects Dell Emc Vasa Provider Virtual Appliance. 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

EMC VASA Provider Virtual Appliance versions 8.3.x and prior has an unauthenticated remote code execution vulnerability that could potentially be exploited by malicious users to compromise the affected system.

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-20: Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected products

  • Dell Emc Vasa Provider Virtual Appliance: up to and including 8.3.0

References