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CVE-2017-17067: Splunk: Incorrect Authorization

CVE-2017-17067 is rated critical with a CVSS v3.0 base score of 9.8 and affects Splunk. 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

Splunk Web in Splunk Enterprise 7.0.x before 7.0.0.1, 6.6.x before 6.6.3.2, 6.5.x before 6.5.6, 6.4.x before 6.4.9, and 6.3.x before 6.3.12, when the SAML authType is enabled, mishandles SAML, which allows remote attackers to bypass intended access restrictions or conduct impersonation attacks.

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-863: Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Affected products

  • Splunk: from 6.3.0 before 6.3.12; from 6.4.0 before 6.4.9; from 6.5.0 before 6.5.6; from 6.6.0 before 6.6.3.2; from 7.0.0 before 7.0.0.1

References