CVE-2017-6747 Information

Description

A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE Cisco ISE Express and Cisco ISE Virtual Appliance running Release 1.3 1.4 2.0.0 2.0.1 or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securitytracker.com/id/1039054 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ise

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8