A vulnerability in the role-based resource checking functionality of the Cisco Unified Computing System (UCS) Director could allow an authenticated, remote attacker to view unauthorized information for any virtual machine in the UCS Director end-user portal and perform any permitted operations on any virtual machine. The permitted operations can be configured for the end user on the virtual machines with either of the following settings:
- The virtual machine is associated to a Virtual Data Center (VDC) that has an end user self-service policy attached to the VDC.
- The end user role has VM Management Actions settings configured under User Permissions. This is a global configuration, so all the virtual machines visible in the end-user portal will have the VM management actions available.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
Vulnerable ProductsThis vulnerability affects Cisco Unified Computing System (UCS) Director releases 6.0 and 6.5 prior to patch 3 that are in a default configuration.
This vulnerability can be exploited via the web interface (GUI). The Rest API interface is not affected.
Both locally authenticated and LDAP-authenticated accounts can be used to exploit this vulnerability.
Products Confirmed Not VulnerableAlthough this vulnerability does not affect the Cisco Integrated Management Controller (IMC) Supervisor, the same modified login can be used. However, the login does not expose any unintended data.
Cisco has confirmed that this vulnerability does not affect the following products:
- Cisco Unified Computing System Director Releases prior to 6.0
- Cisco Unified Computing System Director Express for Big Data
An authenticated user who logs in to the system and exploits this vulnerability will have visibility into all virtual machines shown in the Virtual Resources menu. The actions that a user may perform against the virtual machines will depend on the actions that are permitted in either of the following:
- The assigned end user self-service policy for the VDC in Policies > Virtual/Hypervisor Policies > Service Delivery > End User Self-Service Policy
- The user’s role as defined in System > User Roles > User Permissions > VM Management Actions
There are no workarounds that address this vulnerability.
Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC:
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
This vulnerability is fixed in the Cisco UCS Director 184.108.40.206 upgrade patch. The patch can be downloaded from the Software Center on Cisco.com by navigating to Products > Servers - Unified Computing > UCS Director > UCS Director 6.5 > UCS Director Virtual Appliance Software-6.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
This vulnerability was found during the resolution of a Cisco TAC support case.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Version Description Section Status Date 1.0 Initial public release. — Final 2018-April-18
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